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Finding the Third Proportional to 339,408 and 670,248

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Solution

The third proportional to 339,408 and 670,248 is: 1,323,576.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,408 : 670,248 = 670,248 : x
  2. Step 2: Convert to fraction form
    339,408/670,248 = 670,248/x
  3. Step 3: Cross multiply
    339,408x = 670,248 × 670,248
  4. Step 4: Simplify right side
    339,408x = 449,232,381,504
  5. Step 5: Solve for x
    x = 449,232,381,504/339,408
  6. Step 6: Final answer
    x = 1,323,576.29

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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.