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Finding the Fourth Proportional to 530,997.20, 732,876.36 and 304,790.48

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Solution

The fourth proportional to 530,997.20, 732,876.36 and 304,790.48 is: 420,668.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,997.20 : 732,876.36 = 304,790.48 : x
  2. Step 2: Convert to fraction form
    530,997.20/732,876.36 = 304,790.48/x
  3. Step 3: Cross multiply
    530,997.20x = 732,876.36 × 304,790.48
  4. Step 4: Simplify right side
    530,997.20x = 223,373,737,545.05
  5. Step 5: Solve for x
    x = 223,373,737,545.05/530,997.20
  6. Step 6: Final answer
    x = 420,668.39

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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.