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Finding the Third Proportional to 427,010 and 988,421

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Solution

The third proportional to 427,010 and 988,421 is: 2,287,946.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,010 : 988,421 = 988,421 : x
  2. Step 2: Convert to fraction form
    427,010/988,421 = 988,421/x
  3. Step 3: Cross multiply
    427,010x = 988,421 × 988,421
  4. Step 4: Simplify right side
    427,010x = 976,976,073,241
  5. Step 5: Solve for x
    x = 976,976,073,241/427,010
  6. Step 6: Final answer
    x = 2,287,946.59

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.