Home / 721,328.33-1,082,209.14-215,905.82

Finding the Fourth Proportional to 721,328.33, 1,082,209.14 and 215,905.82

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Solution

The fourth proportional to 721,328.33, 1,082,209.14 and 215,905.82 is: 323,923.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,328.33 : 1,082,209.14 = 215,905.82 : x
  2. Step 2: Convert to fraction form
    721,328.33/1,082,209.14 = 215,905.82/x
  3. Step 3: Cross multiply
    721,328.33x = 1,082,209.14 × 215,905.82
  4. Step 4: Simplify right side
    721,328.33x = 233,655,246,372.15
  5. Step 5: Solve for x
    x = 233,655,246,372.15/721,328.33
  6. Step 6: Final answer
    x = 323,923.57

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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.