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Finding the Third Proportional to 393,780 and 590,542

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Solution

The third proportional to 393,780 and 590,542 is: 885,621.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,780 : 590,542 = 590,542 : x
  2. Step 2: Convert to fraction form
    393,780/590,542 = 590,542/x
  3. Step 3: Cross multiply
    393,780x = 590,542 × 590,542
  4. Step 4: Simplify right side
    393,780x = 348,739,853,764
  5. Step 5: Solve for x
    x = 348,739,853,764/393,780
  6. Step 6: Final answer
    x = 885,621.04

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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.