Home / 485,116.20-727,674.30-317,154.60

Finding the Fourth Proportional to 485,116.20, 727,674.30 and 317,154.60

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Solution

The fourth proportional to 485,116.20, 727,674.30 and 317,154.60 is: 475,731.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,116.20 : 727,674.30 = 317,154.60 : x
  2. Step 2: Convert to fraction form
    485,116.20/727,674.30 = 317,154.60/x
  3. Step 3: Cross multiply
    485,116.20x = 727,674.30 × 317,154.60
  4. Step 4: Simplify right side
    485,116.20x = 230,785,251,546.78
  5. Step 5: Solve for x
    x = 230,785,251,546.78/485,116.20
  6. Step 6: Final answer
    x = 475,731.90

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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.