DAX - Adding Measures by using another measure as input

Thanks but the new measure is now returning blanks.

Aplogies I havent given the full background of what I am trying to achieve -

I have a data set like this

Year    Month 1             2            3             4                 

1          100               300           600          1500

2          200               400           800

3          300               500

4          400         

I am calculating my 1st measure as sum(next months value)/sum(current months value) by raking the month column.

so my result currently looks like this now -

Year   M 1             M2        M3                        

1          3               2           .4          

2          2               2           

3          .6              

In the next step I want to display a single row as

M1    M2    M3

5.6     4        .4

Hope this helps?