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Finding the Third Proportional to 339,429 and 670,293

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Solution

The third proportional to 339,429 and 670,293 is: 1,323,672.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,429 : 670,293 = 670,293 : x
  2. Step 2: Convert to fraction form
    339,429/670,293 = 670,293/x
  3. Step 3: Cross multiply
    339,429x = 670,293 × 670,293
  4. Step 4: Simplify right side
    339,429x = 449,292,705,849
  5. Step 5: Solve for x
    x = 449,292,705,849/339,429
  6. Step 6: Final answer
    x = 1,323,672.13

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.