Home / 435,934.38-653,909.80-120,399.68

Finding the Fourth Proportional to 435,934.38, 653,909.80 and 120,399.68

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Solution

The fourth proportional to 435,934.38, 653,909.80 and 120,399.68 is: 180,601.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,934.38 : 653,909.80 = 120,399.68 : x
  2. Step 2: Convert to fraction form
    435,934.38/653,909.80 = 120,399.68/x
  3. Step 3: Cross multiply
    435,934.38x = 653,909.80 × 120,399.68
  4. Step 4: Simplify right side
    435,934.38x = 78,730,530,668.86
  5. Step 5: Solve for x
    x = 78,730,530,668.86/435,934.38
  6. Step 6: Final answer
    x = 180,601.79

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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.