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Finding the Third Proportional to 278,939 and 572,580

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Solution

The third proportional to 278,939 and 572,580 is: 1,175,338.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,939 : 572,580 = 572,580 : x
  2. Step 2: Convert to fraction form
    278,939/572,580 = 572,580/x
  3. Step 3: Cross multiply
    278,939x = 572,580 × 572,580
  4. Step 4: Simplify right side
    278,939x = 327,847,856,400
  5. Step 5: Solve for x
    x = 327,847,856,400/278,939
  6. Step 6: Final answer
    x = 1,175,338.90

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.