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Finding the Fourth Proportional to 540,831.20, 809,691.60 and 330,879.20

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Solution

The fourth proportional to 540,831.20, 809,691.60 and 330,879.20 is: 495,367.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,831.20 : 809,691.60 = 330,879.20 : x
  2. Step 2: Convert to fraction form
    540,831.20/809,691.60 = 330,879.20/x
  3. Step 3: Cross multiply
    540,831.20x = 809,691.60 × 330,879.20
  4. Step 4: Simplify right side
    540,831.20x = 267,910,108,854.72
  5. Step 5: Solve for x
    x = 267,910,108,854.72/540,831.20
  6. Step 6: Final answer
    x = 495,367.33

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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.