(RGS 1/5) Binary multiples
05AB1E, 6 bytes
∞b.ΔIÖ

Try it online! or verify all test cases (courtesy of @KevinCruijssen)

Explanation
∞b           - Infinite binary list
  .Δ         - Find the first value such that..
    IÖ       - It's divisible by the input