Home / 809,321.60-1,214,128.20-336,054.80

Finding the Fourth Proportional to 809,321.60, 1,214,128.20 and 336,054.80

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Solution

The fourth proportional to 809,321.60, 1,214,128.20 and 336,054.80 is: 504,142.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,321.60 : 1,214,128.20 = 336,054.80 : x
  2. Step 2: Convert to fraction form
    809,321.60/1,214,128.20 = 336,054.80/x
  3. Step 3: Cross multiply
    809,321.60x = 1,214,128.20 × 336,054.80
  4. Step 4: Simplify right side
    809,321.60x = 408,013,609,425.36
  5. Step 5: Solve for x
    x = 408,013,609,425.36/809,321.60
  6. Step 6: Final answer
    x = 504,142.74

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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.