Joining measures from two fact tables

Question

Started my BI journey two days ago and got stuck with this “issue”.

I have a fact table representing order intake (consists of invoices and sales orders related to a project -multiple rows with same project) and an additional fact table representing projects (dates, budgets, actual ect)

So i would like to group and sum the order intake pr. Project and by project sales and current-forecast margin (table 2).

Resulting In a KPI card showing total order intake amount and corresponding sales and forecast %

Hope it makes sense

Thought abount merging to one table - but from what i Read this is not recommended