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Finding the Third Proportional to 489,731 and 717,829

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Solution

The third proportional to 489,731 and 717,829 is: 1,052,166.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,731 : 717,829 = 717,829 : x
  2. Step 2: Convert to fraction form
    489,731/717,829 = 717,829/x
  3. Step 3: Cross multiply
    489,731x = 717,829 × 717,829
  4. Step 4: Simplify right side
    489,731x = 515,278,473,241
  5. Step 5: Solve for x
    x = 515,278,473,241/489,731
  6. Step 6: Final answer
    x = 1,052,166.34

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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.