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Finding the Third Proportional to 314,843 and 679,439

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Solution

The third proportional to 314,843 and 679,439 is: 1,466,246.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,843 : 679,439 = 679,439 : x
  2. Step 2: Convert to fraction form
    314,843/679,439 = 679,439/x
  3. Step 3: Cross multiply
    314,843x = 679,439 × 679,439
  4. Step 4: Simplify right side
    314,843x = 461,637,354,721
  5. Step 5: Solve for x
    x = 461,637,354,721/314,843
  6. Step 6: Final answer
    x = 1,466,246.21

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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.