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Finding the Third Proportional to 458,808 and 987,918

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Solution

The third proportional to 458,808 and 987,918 is: 2,127,212.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,808 : 987,918 = 987,918 : x
  2. Step 2: Convert to fraction form
    458,808/987,918 = 987,918/x
  3. Step 3: Cross multiply
    458,808x = 987,918 × 987,918
  4. Step 4: Simplify right side
    458,808x = 975,981,974,724
  5. Step 5: Solve for x
    x = 975,981,974,724/458,808
  6. Step 6: Final answer
    x = 2,127,212.20

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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.