Home / 485,433.12-727,679.20-185,682.88

Finding the Fourth Proportional to 485,433.12, 727,679.20 and 185,682.88

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Solution

The fourth proportional to 485,433.12, 727,679.20 and 185,682.88 is: 278,344.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,433.12 : 727,679.20 = 185,682.88 : x
  2. Step 2: Convert to fraction form
    485,433.12/727,679.20 = 185,682.88/x
  3. Step 3: Cross multiply
    485,433.12x = 727,679.20 × 185,682.88
  4. Step 4: Simplify right side
    485,433.12x = 135,117,569,572.10
  5. Step 5: Solve for x
    x = 135,117,569,572.10/485,433.12
  6. Step 6: Final answer
    x = 278,344.36

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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.