Sometimes we find we want to install a program for which only packages available for an architecture. If your distribution is installed with amd64 architecture but the package is only for i386 can force the installation to ignore this discrepancy. Frequently, a program compiled for i386 work properly on amd64. The command to do is:

sudo dpkg -i --force-architecture paquete_i386.deb

Where will paquete_i386.deb package the program file you want to install. In this way ignores the divergence with the system architecture and try to install the package normally.

If the package can not function properly installed uninstall it with:

sudo dpkg -r nombre_paquete

Where package_name is the name of the package installed, not the name of the file that urge in the previous step.