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Finding the Fourth Proportional to 678,073.50, 935,785.17 and 376,267.50

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Solution

The fourth proportional to 678,073.50, 935,785.17 and 376,267.50 is: 519,273.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,073.50 : 935,785.17 = 376,267.50 : x
  2. Step 2: Convert to fraction form
    678,073.50/935,785.17 = 376,267.50/x
  3. Step 3: Cross multiply
    678,073.50x = 935,785.17 × 376,267.50
  4. Step 4: Simplify right side
    678,073.50x = 352,105,546,452.98
  5. Step 5: Solve for x
    x = 352,105,546,452.98/678,073.50
  6. Step 6: Final answer
    x = 519,273.42

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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.