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Finding the Fourth Proportional to 547,272.80, 820,909.20 and 494,128.70

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Solution

The fourth proportional to 547,272.80, 820,909.20 and 494,128.70 is: 741,193.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,272.80 : 820,909.20 = 494,128.70 : x
  2. Step 2: Convert to fraction form
    547,272.80/820,909.20 = 494,128.70/x
  3. Step 3: Cross multiply
    547,272.80x = 820,909.20 × 494,128.70
  4. Step 4: Simplify right side
    547,272.80x = 405,634,795,814.04
  5. Step 5: Solve for x
    x = 405,634,795,814.04/547,272.80
  6. Step 6: Final answer
    x = 741,193.05

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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.