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Finding the Third Proportional to 278,652 and 417,329

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Solution

The third proportional to 278,652 and 417,329 is: 625,021.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,652 : 417,329 = 417,329 : x
  2. Step 2: Convert to fraction form
    278,652/417,329 = 417,329/x
  3. Step 3: Cross multiply
    278,652x = 417,329 × 417,329
  4. Step 4: Simplify right side
    278,652x = 174,163,494,241
  5. Step 5: Solve for x
    x = 174,163,494,241/278,652
  6. Step 6: Final answer
    x = 625,021.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.