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Finding the Third Proportional to 315,540 and 679,194

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Solution

The third proportional to 315,540 and 679,194 is: 1,461,952.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,540 : 679,194 = 679,194 : x
  2. Step 2: Convert to fraction form
    315,540/679,194 = 679,194/x
  3. Step 3: Cross multiply
    315,540x = 679,194 × 679,194
  4. Step 4: Simplify right side
    315,540x = 461,304,489,636
  5. Step 5: Solve for x
    x = 461,304,489,636/315,540
  6. Step 6: Final answer
    x = 1,461,952.49

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.