Home / 655,211,079.84-982,954,829.28-212,519,381.76

Finding the Fourth Proportional to 655,211,079.84, 982,954,829.28 and 212,519,381.76

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Solution

The fourth proportional to 655,211,079.84, 982,954,829.28 and 212,519,381.76 is: 318,823,901.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,211,079.84 : 982,954,829.28 = 212,519,381.76 : x
  2. Step 2: Convert to fraction form
    655,211,079.84/982,954,829.28 = 212,519,381.76/x
  3. Step 3: Cross multiply
    655,211,079.84x = 982,954,829.28 × 212,519,381.76
  4. Step 4: Simplify right side
    655,211,079.84x = 208,896,952,616,591,936
  5. Step 5: Solve for x
    x = 208,896,952,616,591,936/655,211,079.84
  6. Step 6: Final answer
    x = 318,823,901.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.