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Finding the Third Proportional to 386,866 and 591,747

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Solution

The third proportional to 386,866 and 591,747 is: 905,131.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,866 : 591,747 = 591,747 : x
  2. Step 2: Convert to fraction form
    386,866/591,747 = 591,747/x
  3. Step 3: Cross multiply
    386,866x = 591,747 × 591,747
  4. Step 4: Simplify right side
    386,866x = 350,164,512,009
  5. Step 5: Solve for x
    x = 350,164,512,009/386,866
  6. Step 6: Final answer
    x = 905,131.27

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.