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Finding the Third Proportional to 312,931 and 675,749

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Solution

The third proportional to 312,931 and 675,749 is: 1,459,224.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,931 : 675,749 = 675,749 : x
  2. Step 2: Convert to fraction form
    312,931/675,749 = 675,749/x
  3. Step 3: Cross multiply
    312,931x = 675,749 × 675,749
  4. Step 4: Simplify right side
    312,931x = 456,636,711,001
  5. Step 5: Solve for x
    x = 456,636,711,001/312,931
  6. Step 6: Final answer
    x = 1,459,224.91

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.