Home / 721,797,098.76-996,053,324.22-391,765,151.88

Finding the Fourth Proportional to 721,797,098.76, 996,053,324.22 and 391,765,151.88

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Solution

The fourth proportional to 721,797,098.76, 996,053,324.22 and 391,765,151.88 is: 540,621,432.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,797,098.76 : 996,053,324.22 = 391,765,151.88 : x
  2. Step 2: Convert to fraction form
    721,797,098.76/996,053,324.22 = 391,765,151.88/x
  3. Step 3: Cross multiply
    721,797,098.76x = 996,053,324.22 × 391,765,151.88
  4. Step 4: Simplify right side
    721,797,098.76x = 390,218,981,843,627,200
  5. Step 5: Solve for x
    x = 390,218,981,843,627,200/721,797,098.76
  6. Step 6: Final answer
    x = 540,621,432.97

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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.