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Finding the Fourth Proportional to 720,793.32, 994,715.54 and 398,524.22

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Solution

The fourth proportional to 720,793.32, 994,715.54 and 398,524.22 is: 549,974.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,793.32 : 994,715.54 = 398,524.22 : x
  2. Step 2: Convert to fraction form
    720,793.32/994,715.54 = 398,524.22/x
  3. Step 3: Cross multiply
    720,793.32x = 994,715.54 × 398,524.22
  4. Step 4: Simplify right side
    720,793.32x = 396,418,234,700.38
  5. Step 5: Solve for x
    x = 396,418,234,700.38/720,793.32
  6. Step 6: Final answer
    x = 549,974.90

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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.