How do I calculate my module grade?

Hi, I am taking 4 modules;
Module 1: out of 100 marks (30 credits)
Module 2: out of 144 marks (30 credits)
Module 3: out of 413 marks (30 credits)
Module 4: out of 100 marks (30 credits)
I know how to work out the total marks for each assignment for Modules 1 and 4 since they're out of 100, but I can't figure out how to calculate it for Modules 2 and 3.
To work it out, I am doing the following calculation:
(total achieved marks from all assignments / total overall marks from all assignments) x 100.
To me this would make sense if, for example, an assignment worth 40% is out of 40 marks. But that assignment is out of 58 marks. Or an assignment worth 7.5% is out of 40 marks. Will the same calculation still work in this case. If not how do I calculate it?
TIA for your replies!

Do the percentage in reverse.

wdym