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Finding the Fourth Proportional to 458,478.96, 687,251.88 and 424,536.72

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Solution

The fourth proportional to 458,478.96, 687,251.88 and 424,536.72 is: 636,373.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,478.96 : 687,251.88 = 424,536.72 : x
  2. Step 2: Convert to fraction form
    458,478.96/687,251.88 = 424,536.72/x
  3. Step 3: Cross multiply
    458,478.96x = 687,251.88 × 424,536.72
  4. Step 4: Simplify right side
    458,478.96x = 291,763,658,949.03
  5. Step 5: Solve for x
    x = 291,763,658,949.03/458,478.96
  6. Step 6: Final answer
    x = 636,373.06

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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.