P, Q, and R enter into a partnership. P contributes one-fifth of the whole capital while Q contributes twice as much as P and R together contribute. If the profit at the end of the year is ₹555540, what is the difference (in ₹) of Q's share and the combined share of P and R in the profit?

Total Profit: ₹ 5,55,540

Q contributes twice as much as P and R together.

P contributes $\frac{1}{5}$ of the capital (Note: This information is extra and not required to find the specific difference requested).

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Since profit is distributed based on capital contribution, we look at the relationship between Q and the combined capital of P and R.

$Q = 2 \times (P + R)$

This can be written as a ratio:

Entity	Share Ratio	Fraction of Total
Q	$2$	$\frac{2}{3}$
P + R	$1$	$\frac{1}{3}$
Total	3	1

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The difference between Q's share and the combined share of (P + R):

$\text{Difference} = \text{Share of Q} - \text{Share of (P + R)}$

$\text{Difference} = \frac{2}{3}(\text{Total Profit}) - \frac{1}{3}(\text{Total Profit})$

$\text{Difference} = \frac{1}{3} \times \text{Total Profit}$

$\text{Difference} = \frac{1}{3} \times 5,55,540$

$\text{Difference} = 1,85,180$

Therefore, the difference between Q's share and the combined share of P and R is ₹ 1,85,180.