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Finding the Fourth Proportional to 724,805.62, 1,000,245.30 and 402,545.90

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Solution

The fourth proportional to 724,805.62, 1,000,245.30 and 402,545.90 is: 555,520.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,805.62 : 1,000,245.30 = 402,545.90 : x
  2. Step 2: Convert to fraction form
    724,805.62/1,000,245.30 = 402,545.90/x
  3. Step 3: Cross multiply
    724,805.62x = 1,000,245.30 × 402,545.90
  4. Step 4: Simplify right side
    724,805.62x = 402,644,644,509.27
  5. Step 5: Solve for x
    x = 402,644,644,509.27/724,805.62
  6. Step 6: Final answer
    x = 555,520.86

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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.