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Finding the Fourth Proportional to 408,251.90, 612,803.27 and 399,092.72

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Solution

The fourth proportional to 408,251.90, 612,803.27 and 399,092.72 is: 599,054.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,251.90 : 612,803.27 = 399,092.72 : x
  2. Step 2: Convert to fraction form
    408,251.90/612,803.27 = 399,092.72/x
  3. Step 3: Cross multiply
    408,251.90x = 612,803.27 × 399,092.72
  4. Step 4: Simplify right side
    408,251.90x = 244,565,325,229.93
  5. Step 5: Solve for x
    x = 244,565,325,229.93/408,251.90
  6. Step 6: Final answer
    x = 599,054.96

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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.