Home / 485,240.40-727,882.20-185,864.40

Finding the Fourth Proportional to 485,240.40, 727,882.20 and 185,864.40

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Solution

The fourth proportional to 485,240.40, 727,882.20 and 185,864.40 is: 278,804.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,240.40 : 727,882.20 = 185,864.40 : x
  2. Step 2: Convert to fraction form
    485,240.40/727,882.20 = 185,864.40/x
  3. Step 3: Cross multiply
    485,240.40x = 727,882.20 × 185,864.40
  4. Step 4: Simplify right side
    485,240.40x = 135,287,388,373.68
  5. Step 5: Solve for x
    x = 135,287,388,373.68/485,240.40
  6. Step 6: Final answer
    x = 278,804.87

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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.