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Finding the Fourth Proportional to 529,375.80, 794,063.70 and 280,543.80

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Solution

The fourth proportional to 529,375.80, 794,063.70 and 280,543.80 is: 420,815.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,375.80 : 794,063.70 = 280,543.80 : x
  2. Step 2: Convert to fraction form
    529,375.80/794,063.70 = 280,543.80/x
  3. Step 3: Cross multiply
    529,375.80x = 794,063.70 × 280,543.80
  4. Step 4: Simplify right side
    529,375.80x = 222,769,647,840.06
  5. Step 5: Solve for x
    x = 222,769,647,840.06/529,375.80
  6. Step 6: Final answer
    x = 420,815.70

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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.