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Finding the Third Proportional to 987,549 and 2,122,419

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Solution

The third proportional to 987,549 and 2,122,419 is: 4,561,457.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,549 : 2,122,419 = 2,122,419 : x
  2. Step 2: Convert to fraction form
    987,549/2,122,419 = 2,122,419/x
  3. Step 3: Cross multiply
    987,549x = 2,122,419 × 2,122,419
  4. Step 4: Simplify right side
    987,549x = 4,504,662,411,561
  5. Step 5: Solve for x
    x = 4,504,662,411,561/987,549
  6. Step 6: Final answer
    x = 4,561,457.11

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.