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Finding the Third Proportional to 987,561 and 2,124,945

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Solution

The third proportional to 987,561 and 2,124,945 is: 4,572,265.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,561 : 2,124,945 = 2,124,945 : x
  2. Step 2: Convert to fraction form
    987,561/2,124,945 = 2,124,945/x
  3. Step 3: Cross multiply
    987,561x = 2,124,945 × 2,124,945
  4. Step 4: Simplify right side
    987,561x = 4,515,391,253,025
  5. Step 5: Solve for x
    x = 4,515,391,253,025/987,561
  6. Step 6: Final answer
    x = 4,572,265.67

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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.