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Finding the Third Proportional to 987,057 and 2,143,242

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Solution

The third proportional to 987,057 and 2,143,242 is: 4,653,719.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,057 : 2,143,242 = 2,143,242 : x
  2. Step 2: Convert to fraction form
    987,057/2,143,242 = 2,143,242/x
  3. Step 3: Cross multiply
    987,057x = 2,143,242 × 2,143,242
  4. Step 4: Simplify right side
    987,057x = 4,593,486,270,564
  5. Step 5: Solve for x
    x = 4,593,486,270,564/987,057
  6. Step 6: Final answer
    x = 4,653,719.36

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.