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Finding the Third Proportional to 408,721.50 and 613,212.75

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Solution

The third proportional to 408,721.50 and 613,212.75 is: 920,014.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,721.50 : 613,212.75 = 613,212.75 : x
  2. Step 2: Convert to fraction form
    408,721.50/613,212.75 = 613,212.75/x
  3. Step 3: Cross multiply
    408,721.50x = 613,212.75 × 613,212.75
  4. Step 4: Simplify right side
    408,721.50x = 376,029,876,762.56
  5. Step 5: Solve for x
    x = 376,029,876,762.56/408,721.50
  6. Step 6: Final answer
    x = 920,014.92

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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.