Home / 649,542,385.70-974,313,578.55-442,918,124.90

Finding the Fourth Proportional to 649,542,385.70, 974,313,578.55 and 442,918,124.90

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Solution

The fourth proportional to 649,542,385.70, 974,313,578.55 and 442,918,124.90 is: 664,377,187.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,542,385.70 : 974,313,578.55 = 442,918,124.90 : x
  2. Step 2: Convert to fraction form
    649,542,385.70/974,313,578.55 = 442,918,124.90/x
  3. Step 3: Cross multiply
    649,542,385.70x = 974,313,578.55 × 442,918,124.90
  4. Step 4: Simplify right side
    649,542,385.70x = 431,541,143,275,974,848
  5. Step 5: Solve for x
    x = 431,541,143,275,974,848/649,542,385.70
  6. Step 6: Final answer
    x = 664,377,187.35

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Double scale
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1.5x scale

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.