Cannot access right version of Mongo DB via Shell

I downloaded version 4.0.3 and was able to save to .bash_profile.
In terminal, I type in source ~/.bash_profile to refresh and I can see the path to be the right version 4.0.3.

But when I type in mongo --nodb, it tells me Mongo Shell Version 3.2.1 which I think should be 4.0.3 the one that I just downloaded.

Help?