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Finding the Fourth Proportional to 852,287.67, 1,278,099.27 and 319,518

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Solution

The fourth proportional to 852,287.67, 1,278,099.27 and 319,518 is: 479,152.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,287.67 : 1,278,099.27 = 319,518 : x
  2. Step 2: Convert to fraction form
    852,287.67/1,278,099.27 = 319,518/x
  3. Step 3: Cross multiply
    852,287.67x = 1,278,099.27 × 319,518
  4. Step 4: Simplify right side
    852,287.67x = 408,375,722,551.86
  5. Step 5: Solve for x
    x = 408,375,722,551.86/852,287.67
  6. Step 6: Final answer
    x = 479,152.45

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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.