Looking at your picture, I see that OR goes down exactly as much as OP and to the right half as much as OQ. That tells me that OR= OP+ (1/2)OQ.
I see that OS goes down as far as OP and to the right as far as OQ: OS= OP+ OQ.
I see that OA and OW both extend down twice as far as OP so both will require "2OP". OA extends as far to the right as OQ while OW extends to the right 3/2 as far as OQ.
OY extends downward three times as far as OP and to the right exactly as far as OQ. OY= what?