Home / 485,421.90-727,614.45-185,786.70

Finding the Fourth Proportional to 485,421.90, 727,614.45 and 185,786.70

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Solution

The fourth proportional to 485,421.90, 727,614.45 and 185,786.70 is: 278,481.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,421.90 : 727,614.45 = 185,786.70 : x
  2. Step 2: Convert to fraction form
    485,421.90/727,614.45 = 185,786.70/x
  3. Step 3: Cross multiply
    485,421.90x = 727,614.45 × 185,786.70
  4. Step 4: Simplify right side
    485,421.90x = 135,181,087,537.82
  5. Step 5: Solve for x
    x = 135,181,087,537.82/485,421.90
  6. Step 6: Final answer
    x = 278,481.64

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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.