Home / 721,777,182.35-996,053,248.82-391,752,389.39

Finding the Fourth Proportional to 721,777,182.35, 996,053,248.82 and 391,752,389.39

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Solution

The fourth proportional to 721,777,182.35, 996,053,248.82 and 391,752,389.39 is: 540,618,697.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,777,182.35 : 996,053,248.82 = 391,752,389.39 : x
  2. Step 2: Convert to fraction form
    721,777,182.35/996,053,248.82 = 391,752,389.39/x
  3. Step 3: Cross multiply
    721,777,182.35x = 996,053,248.82 × 391,752,389.39
  4. Step 4: Simplify right side
    721,777,182.35x = 390,206,240,185,438,592
  5. Step 5: Solve for x
    x = 390,206,240,185,438,592/721,777,182.35
  6. Step 6: Final answer
    x = 540,618,697.47

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1.5x scale

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.