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Finding the Fourth Proportional to 543,808.70, 815,713.05 and 543,808.70

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Solution

The fourth proportional to 543,808.70, 815,713.05 and 543,808.70 is: 815,713.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,808.70 : 815,713.05 = 543,808.70 : x
  2. Step 2: Convert to fraction form
    543,808.70/815,713.05 = 543,808.70/x
  3. Step 3: Cross multiply
    543,808.70x = 815,713.05 × 543,808.70
  4. Step 4: Simplify right side
    543,808.70x = 443,591,853,293.54
  5. Step 5: Solve for x
    x = 443,591,853,293.54/543,808.70
  6. Step 6: Final answer
    x = 815,713.05

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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.