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Finding the Fourth Proportional to 654,069.60, 981,104.40 and 280,821.60

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Solution

The fourth proportional to 654,069.60, 981,104.40 and 280,821.60 is: 421,232.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,069.60 : 981,104.40 = 280,821.60 : x
  2. Step 2: Convert to fraction form
    654,069.60/981,104.40 = 280,821.60/x
  3. Step 3: Cross multiply
    654,069.60x = 981,104.40 × 280,821.60
  4. Step 4: Simplify right side
    654,069.60x = 275,515,307,375.04
  5. Step 5: Solve for x
    x = 275,515,307,375.04/654,069.60
  6. Step 6: Final answer
    x = 421,232.40

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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.