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Finding the Third Proportional to 314,469 and 678,753

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Solution

The third proportional to 314,469 and 678,753 is: 1,465,027.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,469 : 678,753 = 678,753 : x
  2. Step 2: Convert to fraction form
    314,469/678,753 = 678,753/x
  3. Step 3: Cross multiply
    314,469x = 678,753 × 678,753
  4. Step 4: Simplify right side
    314,469x = 460,705,635,009
  5. Step 5: Solve for x
    x = 460,705,635,009/314,469
  6. Step 6: Final answer
    x = 1,465,027.19

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.