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Finding the Third Proportional to 297,098 and 641,540

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Solution

The third proportional to 297,098 and 641,540 is: 1,385,312.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,098 : 641,540 = 641,540 : x
  2. Step 2: Convert to fraction form
    297,098/641,540 = 641,540/x
  3. Step 3: Cross multiply
    297,098x = 641,540 × 641,540
  4. Step 4: Simplify right side
    297,098x = 411,573,571,600
  5. Step 5: Solve for x
    x = 411,573,571,600/297,098
  6. Step 6: Final answer
    x = 1,385,312.49

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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.