Home / 649,542,381.20-974,313,571.80-442,918,120.40

Finding the Fourth Proportional to 649,542,381.20, 974,313,571.80 and 442,918,120.40

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Solution

The fourth proportional to 649,542,381.20, 974,313,571.80 and 442,918,120.40 is: 664,377,180.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,542,381.20 : 974,313,571.80 = 442,918,120.40 : x
  2. Step 2: Convert to fraction form
    649,542,381.20/974,313,571.80 = 442,918,120.40/x
  3. Step 3: Cross multiply
    649,542,381.20x = 974,313,571.80 × 442,918,120.40
  4. Step 4: Simplify right side
    649,542,381.20x = 431,541,135,901,866,432
  5. Step 5: Solve for x
    x = 431,541,135,901,866,432/649,542,381.20
  6. Step 6: Final answer
    x = 664,377,180.60

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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.