Home / 689,425.32-1,034,138.29-216,147.59

Finding the Fourth Proportional to 689,425.32, 1,034,138.29 and 216,147.59

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Solution

The fourth proportional to 689,425.32, 1,034,138.29 and 216,147.59 is: 324,221.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,425.32 : 1,034,138.29 = 216,147.59 : x
  2. Step 2: Convert to fraction form
    689,425.32/1,034,138.29 = 216,147.59/x
  3. Step 3: Cross multiply
    689,425.32x = 1,034,138.29 × 216,147.59
  4. Step 4: Simplify right side
    689,425.32x = 223,526,492,858.79
  5. Step 5: Solve for x
    x = 223,526,492,858.79/689,425.32
  6. Step 6: Final answer
    x = 324,221.47

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Double scale
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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.