Measure multiplying the data from the two tables

Hello

I'm begining with DAX and I try to create new measure with calculete price in euro; price in local currency from first table [sales] and currency form second [Currency].

Of course, the tables are connected in the model by the currency symbol column.

I can make join and add column with currrency in Sales table, but the better way is try to use measure. 

In excel loos like: Price in Euro = [sales]'Price in local currency' * xlookup([sales]"currency local" ; [Currency]"currency"; [Currency]"Ratio_EUR")