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Finding the Third Proportional to 299,418.75 and 687,188.25

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Solution

The third proportional to 299,418.75 and 687,188.25 is: 1,577,148.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,418.75 : 687,188.25 = 687,188.25 : x
  2. Step 2: Convert to fraction form
    299,418.75/687,188.25 = 687,188.25/x
  3. Step 3: Cross multiply
    299,418.75x = 687,188.25 × 687,188.25
  4. Step 4: Simplify right side
    299,418.75x = 472,227,690,938.06
  5. Step 5: Solve for x
    x = 472,227,690,938.06/299,418.75
  6. Step 6: Final answer
    x = 1,577,148.03

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.