Home / 809,439.60-1,214,305.20-336,172.80

Finding the Fourth Proportional to 809,439.60, 1,214,305.20 and 336,172.80

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Solution

The fourth proportional to 809,439.60, 1,214,305.20 and 336,172.80 is: 504,319.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,439.60 : 1,214,305.20 = 336,172.80 : x
  2. Step 2: Convert to fraction form
    809,439.60/1,214,305.20 = 336,172.80/x
  3. Step 3: Cross multiply
    809,439.60x = 1,214,305.20 × 336,172.80
  4. Step 4: Simplify right side
    809,439.60x = 408,216,379,138.56
  5. Step 5: Solve for x
    x = 408,216,379,138.56/809,439.60
  6. Step 6: Final answer
    x = 504,319.75

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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.