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Finding the Fourth Proportional to 586,331.97, 878,009.42 and 491,312.28

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Solution

The fourth proportional to 586,331.97, 878,009.42 and 491,312.28 is: 735,721.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,331.97 : 878,009.42 = 491,312.28 : x
  2. Step 2: Convert to fraction form
    586,331.97/878,009.42 = 491,312.28/x
  3. Step 3: Cross multiply
    586,331.97x = 878,009.42 × 491,312.28
  4. Step 4: Simplify right side
    586,331.97x = 431,376,814,522.49
  5. Step 5: Solve for x
    x = 431,376,814,522.49/586,331.97
  6. Step 6: Final answer
    x = 735,721.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.