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Finding the Third Proportional to 394,972 and 564,418

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Solution

The third proportional to 394,972 and 564,418 is: 806,557.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,972 : 564,418 = 564,418 : x
  2. Step 2: Convert to fraction form
    394,972/564,418 = 564,418/x
  3. Step 3: Cross multiply
    394,972x = 564,418 × 564,418
  4. Step 4: Simplify right side
    394,972x = 318,567,678,724
  5. Step 5: Solve for x
    x = 318,567,678,724/394,972
  6. Step 6: Final answer
    x = 806,557.63

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.