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Finding the Third Proportional to 354,736 and 521,730

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Solution

The third proportional to 354,736 and 521,730 is: 767,337.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,736 : 521,730 = 521,730 : x
  2. Step 2: Convert to fraction form
    354,736/521,730 = 521,730/x
  3. Step 3: Cross multiply
    354,736x = 521,730 × 521,730
  4. Step 4: Simplify right side
    354,736x = 272,202,192,900
  5. Step 5: Solve for x
    x = 272,202,192,900/354,736
  6. Step 6: Final answer
    x = 767,337.38

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.