Home / 649,542,221.20-974,313,331.80-442,917,960.40

Finding the Fourth Proportional to 649,542,221.20, 974,313,331.80 and 442,917,960.40

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Solution

The fourth proportional to 649,542,221.20, 974,313,331.80 and 442,917,960.40 is: 664,376,940.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,542,221.20 : 974,313,331.80 = 442,917,960.40 : x
  2. Step 2: Convert to fraction form
    649,542,221.20/974,313,331.80 = 442,917,960.40/x
  3. Step 3: Cross multiply
    649,542,221.20x = 974,313,331.80 × 442,917,960.40
  4. Step 4: Simplify right side
    649,542,221.20x = 431,540,873,711,384,448
  5. Step 5: Solve for x
    x = 431,540,873,711,384,448/649,542,221.20
  6. Step 6: Final answer
    x = 664,376,940.60

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Half scale
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Double scale
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Similar ratio
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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.