Home / 728,162.58-1,091,385.78-328,335.24

Finding the Fourth Proportional to 728,162.58, 1,091,385.78 and 328,335.24

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Solution

The fourth proportional to 728,162.58, 1,091,385.78 and 328,335.24 is: 492,115.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,162.58 : 1,091,385.78 = 328,335.24 : x
  2. Step 2: Convert to fraction form
    728,162.58/1,091,385.78 = 328,335.24/x
  3. Step 3: Cross multiply
    728,162.58x = 1,091,385.78 × 328,335.24
  4. Step 4: Simplify right side
    728,162.58x = 358,340,412,008.89
  5. Step 5: Solve for x
    x = 358,340,412,008.89/728,162.58
  6. Step 6: Final answer
    x = 492,115.94

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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.