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Finding the Third Proportional to 323,770 and 686,993

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Solution

The third proportional to 323,770 and 686,993 is: 1,457,699.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,770 : 686,993 = 686,993 : x
  2. Step 2: Convert to fraction form
    323,770/686,993 = 686,993/x
  3. Step 3: Cross multiply
    323,770x = 686,993 × 686,993
  4. Step 4: Simplify right side
    323,770x = 471,959,382,049
  5. Step 5: Solve for x
    x = 471,959,382,049/323,770
  6. Step 6: Final answer
    x = 1,457,699.55

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.