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Finding the Third Proportional to 987,553 and 2,122,427

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Solution

The third proportional to 987,553 and 2,122,427 is: 4,561,473.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,553 : 2,122,427 = 2,122,427 : x
  2. Step 2: Convert to fraction form
    987,553/2,122,427 = 2,122,427/x
  3. Step 3: Cross multiply
    987,553x = 2,122,427 × 2,122,427
  4. Step 4: Simplify right side
    987,553x = 4,504,696,370,329
  5. Step 5: Solve for x
    x = 4,504,696,370,329/987,553
  6. Step 6: Final answer
    x = 4,561,473.03

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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.