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Finding the Third Proportional to 331,667 and 779,660

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Solution

The third proportional to 331,667 and 779,660 is: 1,832,771.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,667 : 779,660 = 779,660 : x
  2. Step 2: Convert to fraction form
    331,667/779,660 = 779,660/x
  3. Step 3: Cross multiply
    331,667x = 779,660 × 779,660
  4. Step 4: Simplify right side
    331,667x = 607,869,715,600
  5. Step 5: Solve for x
    x = 607,869,715,600/331,667
  6. Step 6: Final answer
    x = 1,832,771.17

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.