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Finding the Third Proportional to 394,840 and 627,972

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Solution

The third proportional to 394,840 and 627,972 is: 998,756.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,840 : 627,972 = 627,972 : x
  2. Step 2: Convert to fraction form
    394,840/627,972 = 627,972/x
  3. Step 3: Cross multiply
    394,840x = 627,972 × 627,972
  4. Step 4: Simplify right side
    394,840x = 394,348,832,784
  5. Step 5: Solve for x
    x = 394,348,832,784/394,840
  6. Step 6: Final answer
    x = 998,756.03

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.