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Finding the Third Proportional to 449,872 and 978,474

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Solution

The third proportional to 449,872 and 978,474 is: 2,128,186.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,872 : 978,474 = 978,474 : x
  2. Step 2: Convert to fraction form
    449,872/978,474 = 978,474/x
  3. Step 3: Cross multiply
    449,872x = 978,474 × 978,474
  4. Step 4: Simplify right side
    449,872x = 957,411,368,676
  5. Step 5: Solve for x
    x = 957,411,368,676/449,872
  6. Step 6: Final answer
    x = 2,128,186.17

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.