Home / 721,638.72-1,082,374.85-189,202.03

Finding the Fourth Proportional to 721,638.72, 1,082,374.85 and 189,202.03

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Solution

The fourth proportional to 721,638.72, 1,082,374.85 and 189,202.03 is: 283,781.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,638.72 : 1,082,374.85 = 189,202.03 : x
  2. Step 2: Convert to fraction form
    721,638.72/1,082,374.85 = 189,202.03/x
  3. Step 3: Cross multiply
    721,638.72x = 1,082,374.85 × 189,202.03
  4. Step 4: Simplify right side
    721,638.72x = 204,787,516,608.01
  5. Step 5: Solve for x
    x = 204,787,516,608.01/721,638.72
  6. Step 6: Final answer
    x = 283,781.22

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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.