Home / 543,407.00-815,258.12-386,631.90

Finding the Fourth Proportional to 543,407.00, 815,258.12 and 386,631.90

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Solution

The fourth proportional to 543,407.00, 815,258.12 and 386,631.90 is: 580,052.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,407.00 : 815,258.12 = 386,631.90 : x
  2. Step 2: Convert to fraction form
    543,407.00/815,258.12 = 386,631.90/x
  3. Step 3: Cross multiply
    543,407.00x = 815,258.12 × 386,631.90
  4. Step 4: Simplify right side
    543,407.00x = 315,204,793,992.87
  5. Step 5: Solve for x
    x = 315,204,793,992.87/543,407.00
  6. Step 6: Final answer
    x = 580,052.88

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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.