Home / 728,103.60-1,091,377.80-278,650.80

Finding the Fourth Proportional to 728,103.60, 1,091,377.80 and 278,650.80

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Solution

The fourth proportional to 728,103.60, 1,091,377.80 and 278,650.80 is: 417,678.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,103.60 : 1,091,377.80 = 278,650.80 : x
  2. Step 2: Convert to fraction form
    728,103.60/1,091,377.80 = 278,650.80/x
  3. Step 3: Cross multiply
    728,103.60x = 1,091,377.80 × 278,650.80
  4. Step 4: Simplify right side
    728,103.60x = 304,113,297,072.24
  5. Step 5: Solve for x
    x = 304,113,297,072.24/728,103.60
  6. Step 6: Final answer
    x = 417,678.61

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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.