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Finding the Third Proportional to 408,505.50 and 629,986.50

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Solution

The third proportional to 408,505.50 and 629,986.50 is: 971,548.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,505.50 : 629,986.50 = 629,986.50 : x
  2. Step 2: Convert to fraction form
    408,505.50/629,986.50 = 629,986.50/x
  3. Step 3: Cross multiply
    408,505.50x = 629,986.50 × 629,986.50
  4. Step 4: Simplify right side
    408,505.50x = 396,882,990,182.25
  5. Step 5: Solve for x
    x = 396,882,990,182.25/408,505.50
  6. Step 6: Final answer
    x = 971,548.71

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.