For anyone that speaks 3+ romance languages, how long did it take you to learn each one?

I speak Spanish and Portuguese and am interested in learning French and Italian (and maybe Romanian someday too). I read that French and Italian are 89% similar in vocabulary, as are Spanish and Portuguese. I wonder how long it took you to learn each one and how difficult they were. Personally, I found Portuguese very easy after Spanish. I hope this would be the case with Italian after French too!