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Finding the Fourth Proportional to 451,089.47, 676,633.95 and 421,195.95

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Solution

The fourth proportional to 451,089.47, 676,633.95 and 421,195.95 is: 631,793.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,089.47 : 676,633.95 = 421,195.95 : x
  2. Step 2: Convert to fraction form
    451,089.47/676,633.95 = 421,195.95/x
  3. Step 3: Cross multiply
    451,089.47x = 676,633.95 × 421,195.95
  4. Step 4: Simplify right side
    451,089.47x = 284,995,479,372.50
  5. Step 5: Solve for x
    x = 284,995,479,372.50/451,089.47
  6. Step 6: Final answer
    x = 631,793.68

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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.