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Finding the Third Proportional to 349,620 and 762,728

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Solution

The third proportional to 349,620 and 762,728 is: 1,663,960.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,620 : 762,728 = 762,728 : x
  2. Step 2: Convert to fraction form
    349,620/762,728 = 762,728/x
  3. Step 3: Cross multiply
    349,620x = 762,728 × 762,728
  4. Step 4: Simplify right side
    349,620x = 581,754,001,984
  5. Step 5: Solve for x
    x = 581,754,001,984/349,620
  6. Step 6: Final answer
    x = 1,663,960.88

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.