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Finding the Fourth Proportional to 543,847.40, 815,771.10 and 539,910.80

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Solution

The fourth proportional to 543,847.40, 815,771.10 and 539,910.80 is: 809,866.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,847.40 : 815,771.10 = 539,910.80 : x
  2. Step 2: Convert to fraction form
    543,847.40/815,771.10 = 539,910.80/x
  3. Step 3: Cross multiply
    543,847.40x = 815,771.10 × 539,910.80
  4. Step 4: Simplify right side
    543,847.40x = 440,443,627,217.88
  5. Step 5: Solve for x
    x = 440,443,627,217.88/543,847.40
  6. Step 6: Final answer
    x = 809,866.20

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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.