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Finding the Fourth Proportional to 543,363.80, 815,045.70 and 539,864.60

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Solution

The fourth proportional to 543,363.80, 815,045.70 and 539,864.60 is: 809,796.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,363.80 : 815,045.70 = 539,864.60 : x
  2. Step 2: Convert to fraction form
    543,363.80/815,045.70 = 539,864.60/x
  3. Step 3: Cross multiply
    543,363.80x = 815,045.70 × 539,864.60
  4. Step 4: Simplify right side
    543,363.80x = 440,014,320,812.22
  5. Step 5: Solve for x
    x = 440,014,320,812.22/543,363.80
  6. Step 6: Final answer
    x = 809,796.90

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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.