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Finding the Third Proportional to 395,250 and 611,379

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Solution

The third proportional to 395,250 and 611,379 is: 945,690.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,250 : 611,379 = 611,379 : x
  2. Step 2: Convert to fraction form
    395,250/611,379 = 611,379/x
  3. Step 3: Cross multiply
    395,250x = 611,379 × 611,379
  4. Step 4: Simplify right side
    395,250x = 373,784,281,641
  5. Step 5: Solve for x
    x = 373,784,281,641/395,250
  6. Step 6: Final answer
    x = 945,690.78

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.