Home / 485,187.12-727,391.88-325,429.20

Finding the Fourth Proportional to 485,187.12, 727,391.88 and 325,429.20

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Solution

The fourth proportional to 485,187.12, 727,391.88 and 325,429.20 is: 487,883.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,187.12 : 727,391.88 = 325,429.20 : x
  2. Step 2: Convert to fraction form
    485,187.12/727,391.88 = 325,429.20/x
  3. Step 3: Cross multiply
    485,187.12x = 727,391.88 × 325,429.20
  4. Step 4: Simplify right side
    485,187.12x = 236,714,557,594.90
  5. Step 5: Solve for x
    x = 236,714,557,594.90/485,187.12
  6. Step 6: Final answer
    x = 487,883.02

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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.