Home / 435,764.64-653,684.63-120,221.54

Finding the Fourth Proportional to 435,764.64, 653,684.63 and 120,221.54

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Solution

The fourth proportional to 435,764.64, 653,684.63 and 120,221.54 is: 180,342.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,764.64 : 653,684.63 = 120,221.54 : x
  2. Step 2: Convert to fraction form
    435,764.64/653,684.63 = 120,221.54/x
  3. Step 3: Cross multiply
    435,764.64x = 653,684.63 × 120,221.54
  4. Step 4: Simplify right side
    435,764.64x = 78,586,969,023.40
  5. Step 5: Solve for x
    x = 78,586,969,023.40/435,764.64
  6. Step 6: Final answer
    x = 180,342.69

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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.