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Finding the Fourth Proportional to 480,691.87, 720,407.09 and 353,737.87

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Solution

The fourth proportional to 480,691.87, 720,407.09 and 353,737.87 is: 530,142.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,691.87 : 720,407.09 = 353,737.87 : x
  2. Step 2: Convert to fraction form
    480,691.87/720,407.09 = 353,737.87/x
  3. Step 3: Cross multiply
    480,691.87x = 720,407.09 × 353,737.87
  4. Step 4: Simplify right side
    480,691.87x = 254,835,267,780.81
  5. Step 5: Solve for x
    x = 254,835,267,780.81/480,691.87
  6. Step 6: Final answer
    x = 530,142.66

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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.