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Finding the Fourth Proportional to 664,874, 917,592.52 and 396,602

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Solution

The fourth proportional to 664,874, 917,592.52 and 396,602 is: 547,350.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,874 : 917,592.52 = 396,602 : x
  2. Step 2: Convert to fraction form
    664,874/917,592.52 = 396,602/x
  3. Step 3: Cross multiply
    664,874x = 917,592.52 × 396,602
  4. Step 4: Simplify right side
    664,874x = 363,919,028,617.04
  5. Step 5: Solve for x
    x = 363,919,028,617.04/664,874
  6. Step 6: Final answer
    x = 547,350.37

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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.