Home / 689,427.45-1,034,141.48-216,149.71

Finding the Fourth Proportional to 689,427.45, 1,034,141.48 and 216,149.71

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Solution

The fourth proportional to 689,427.45, 1,034,141.48 and 216,149.71 is: 324,224.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,427.45 : 1,034,141.48 = 216,149.71 : x
  2. Step 2: Convert to fraction form
    689,427.45/1,034,141.48 = 216,149.71/x
  3. Step 3: Cross multiply
    689,427.45x = 1,034,141.48 × 216,149.71
  4. Step 4: Simplify right side
    689,427.45x = 223,529,381,000.97
  5. Step 5: Solve for x
    x = 223,529,381,000.97/689,427.45
  6. Step 6: Final answer
    x = 324,224.66

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Double scale
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Similar ratio
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1.5x scale

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.