Home / 386,587,983.40-533,491,503.78-212,747,727.40

Finding the Fourth Proportional to 386,587,983.40, 533,491,503.78 and 212,747,727.40

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Solution

The fourth proportional to 386,587,983.40, 533,491,503.78 and 212,747,727.40 is: 293,591,911.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,587,983.40 : 533,491,503.78 = 212,747,727.40 : x
  2. Step 2: Convert to fraction form
    386,587,983.40/533,491,503.78 = 212,747,727.40/x
  3. Step 3: Cross multiply
    386,587,983.40x = 533,491,503.78 × 212,747,727.40
  4. Step 4: Simplify right side
    386,587,983.40x = 113,499,105,016,403,504
  5. Step 5: Solve for x
    x = 113,499,105,016,403,504/386,587,983.40
  6. Step 6: Final answer
    x = 293,591,911.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.