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Finding the Fourth Proportional to 663,327.97, 915,395.75 and 376,863.77

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Solution

The fourth proportional to 663,327.97, 915,395.75 and 376,863.77 is: 520,073.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,327.97 : 915,395.75 = 376,863.77 : x
  2. Step 2: Convert to fraction form
    663,327.97/915,395.75 = 376,863.77/x
  3. Step 3: Cross multiply
    663,327.97x = 915,395.75 × 376,863.77
  4. Step 4: Simplify right side
    663,327.97x = 344,979,495,204.39
  5. Step 5: Solve for x
    x = 344,979,495,204.39/663,327.97
  6. Step 6: Final answer
    x = 520,073.80

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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.