How to calculate breakeven for martingale lots using formula?

[edyjasni]

Let's say we have 3 trades at
0.01 1.39456
0.01 1.39556
0.01 1.39656
We just add up the 3 prices and divide by 3 and we get 1.39556 as the breakeven price.

But if the lots are different?
0.01 1.39456
0.02 1.39556
0.04 1.39656

I know the calculation using simple math to find the breakeven price:
((0.01x1.39456) + (0.02x1.39556) + (0.04x1.39656)) / (0.01+0.02+0.04)

But i have no idea how to do it in fxDreema. Can someone help me?

[l'andorrà]

@edyjasni Not sure what you mean. Do you mean using the same SL level for all of them at once? If so you can do the math via profit, regardless of lot size.

[Youngtreptrader]

with martingale doubling as such the break even price would be the 1.39571. profit will be $3 at 1.39556