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Finding the Fourth Proportional to 678,326.76, 936,044.10 and 376,497

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Solution

The fourth proportional to 678,326.76, 936,044.10 and 376,497 is: 519,539.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,326.76 : 936,044.10 = 376,497 : x
  2. Step 2: Convert to fraction form
    678,326.76/936,044.10 = 376,497/x
  3. Step 3: Cross multiply
    678,326.76x = 936,044.10 × 376,497
  4. Step 4: Simplify right side
    678,326.76x = 352,417,795,517.70
  5. Step 5: Solve for x
    x = 352,417,795,517.70/678,326.76
  6. Step 6: Final answer
    x = 519,539.87

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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.