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Finding the Third Proportional to 391,964.25 and 858,663

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Solution

The third proportional to 391,964.25 and 858,663 is: 1,881,044.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,964.25 : 858,663 = 858,663 : x
  2. Step 2: Convert to fraction form
    391,964.25/858,663 = 858,663/x
  3. Step 3: Cross multiply
    391,964.25x = 858,663 × 858,663
  4. Step 4: Simplify right side
    391,964.25x = 737,302,147,569
  5. Step 5: Solve for x
    x = 737,302,147,569/391,964.25
  6. Step 6: Final answer
    x = 1,881,044.37

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.