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Finding the Fourth Proportional to 723,687.95, 998,035.61 and 451,780.89

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Solution

The fourth proportional to 723,687.95, 998,035.61 and 451,780.89 is: 623,049.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,687.95 : 998,035.61 = 451,780.89 : x
  2. Step 2: Convert to fraction form
    723,687.95/998,035.61 = 451,780.89/x
  3. Step 3: Cross multiply
    723,687.95x = 998,035.61 × 451,780.89
  4. Step 4: Simplify right side
    723,687.95x = 450,893,413,878.59
  5. Step 5: Solve for x
    x = 450,893,413,878.59/723,687.95
  6. Step 6: Final answer
    x = 623,049.50

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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.