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Finding the Third Proportional to 858,724 and 1,129,542

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Solution

The third proportional to 858,724 and 1,129,542 is: 1,485,768.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,724 : 1,129,542 = 1,129,542 : x
  2. Step 2: Convert to fraction form
    858,724/1,129,542 = 1,129,542/x
  3. Step 3: Cross multiply
    858,724x = 1,129,542 × 1,129,542
  4. Step 4: Simplify right side
    858,724x = 1,275,865,129,764
  5. Step 5: Solve for x
    x = 1,275,865,129,764/858,724
  6. Step 6: Final answer
    x = 1,485,768.57

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.