Home / 721,641.72-1,082,379.36-189,205.02

Finding the Fourth Proportional to 721,641.72, 1,082,379.36 and 189,205.02

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Solution

The fourth proportional to 721,641.72, 1,082,379.36 and 189,205.02 is: 283,785.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,641.72 : 1,082,379.36 = 189,205.02 : x
  2. Step 2: Convert to fraction form
    721,641.72/1,082,379.36 = 189,205.02/x
  3. Step 3: Cross multiply
    721,641.72x = 1,082,379.36 × 189,205.02
  4. Step 4: Simplify right side
    721,641.72x = 204,791,608,456.39
  5. Step 5: Solve for x
    x = 204,791,608,456.39/721,641.72
  6. Step 6: Final answer
    x = 283,785.71

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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.