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Finding the Third Proportional to 316,404 and 679,548

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Solution

The third proportional to 316,404 and 679,548 is: 1,459,480.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,404 : 679,548 = 679,548 : x
  2. Step 2: Convert to fraction form
    316,404/679,548 = 679,548/x
  3. Step 3: Cross multiply
    316,404x = 679,548 × 679,548
  4. Step 4: Simplify right side
    316,404x = 461,785,484,304
  5. Step 5: Solve for x
    x = 461,785,484,304/316,404
  6. Step 6: Final answer
    x = 1,459,480.55

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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.