excel - Sum quarter data according to months completed -
i need sum quarter data kept in column c2
w2
. in cell w1
number of months passed, current purpose 7. sum in cell w2
. 7 months have passed, hence need sum c2
, d2
, 1/3* e2
, show value in w2
. e2
multiplied 1/3
because 7th month 1/3rd of 3rd quarter. quarters financial quaters, doesn't start fy start.
hope clear. if point me in right direction appreciated.
try formula c2
=if(w$1<3,0,sum(c2:index(c2:w2,w$1/3)))+index(c2:w2,w$1/3+1)*mod(w$1,3)/3
that calculates how many whole quarters need included, partial ones. if function deals small c1 values
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