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Finding the Third Proportional to 515,184 and 679,080

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Solution

The third proportional to 515,184 and 679,080 is: 895,116.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,184 : 679,080 = 679,080 : x
  2. Step 2: Convert to fraction form
    515,184/679,080 = 679,080/x
  3. Step 3: Cross multiply
    515,184x = 679,080 × 679,080
  4. Step 4: Simplify right side
    515,184x = 461,149,646,400
  5. Step 5: Solve for x
    x = 461,149,646,400/515,184
  6. Step 6: Final answer
    x = 895,116.40

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.