Final answer:
To meet the recommended daily intake of potassium, you should consume 3525 milligrams of potassium from other sources.
Step-by-step explanation:
To determine how many milligrams of potassium you should consume daily, you need to know the total recommended daily intake of potassium. According to the information provided, the recommended daily intake of potassium is 4700 mg. Two-thirds cup of black beans provides 25% of the potassium you need daily. So, you should find the remaining 75% of the recommended intake, which is 75% of 4700 mg.
To calculate this, multiply 0.75 by 4700 mg:
0.75 x 4700 mg = 3525 mg
Therefore, you should consume 3525 milligrams of potassium daily from other sources to meet the recommended intake.