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Finding the Third Proportional to 307,732 and 639,924

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Solution

The third proportional to 307,732 and 639,924 is: 1,330,712.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,732 : 639,924 = 639,924 : x
  2. Step 2: Convert to fraction form
    307,732/639,924 = 639,924/x
  3. Step 3: Cross multiply
    307,732x = 639,924 × 639,924
  4. Step 4: Simplify right side
    307,732x = 409,502,725,776
  5. Step 5: Solve for x
    x = 409,502,725,776/307,732
  6. Step 6: Final answer
    x = 1,330,712.20

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.