Home / 389,785.20-584,679.24-119,911.47

Finding the Fourth Proportional to 389,785.20, 584,679.24 and 119,911.47

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Solution

The fourth proportional to 389,785.20, 584,679.24 and 119,911.47 is: 179,867.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,785.20 : 584,679.24 = 119,911.47 : x
  2. Step 2: Convert to fraction form
    389,785.20/584,679.24 = 119,911.47/x
  3. Step 3: Cross multiply
    389,785.20x = 584,679.24 × 119,911.47
  4. Step 4: Simplify right side
    389,785.20x = 70,109,747,146.88
  5. Step 5: Solve for x
    x = 70,109,747,146.88/389,785.20
  6. Step 6: Final answer
    x = 179,867.65

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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.