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Finding the Fourth Proportional to 543,922.20, 815,883.30 and 488,809.80

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Solution

The fourth proportional to 543,922.20, 815,883.30 and 488,809.80 is: 733,214.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,922.20 : 815,883.30 = 488,809.80 : x
  2. Step 2: Convert to fraction form
    543,922.20/815,883.30 = 488,809.80/x
  3. Step 3: Cross multiply
    543,922.20x = 815,883.30 × 488,809.80
  4. Step 4: Simplify right side
    543,922.20x = 398,811,752,696.34
  5. Step 5: Solve for x
    x = 398,811,752,696.34/543,922.20
  6. Step 6: Final answer
    x = 733,214.70

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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.