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Finding the Fourth Proportional to 627,121, 865,426.98 and 344,497

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Solution

The fourth proportional to 627,121, 865,426.98 and 344,497 is: 475,405.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,121 : 865,426.98 = 344,497 : x
  2. Step 2: Convert to fraction form
    627,121/865,426.98 = 344,497/x
  3. Step 3: Cross multiply
    627,121x = 865,426.98 × 344,497
  4. Step 4: Simplify right side
    627,121x = 298,136,998,329.06
  5. Step 5: Solve for x
    x = 298,136,998,329.06/627,121
  6. Step 6: Final answer
    x = 475,405.86

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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.