Home / 728,836.80-1,093,272.48-279,781.44

Finding the Fourth Proportional to 728,836.80, 1,093,272.48 and 279,781.44

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Solution

The fourth proportional to 728,836.80, 1,093,272.48 and 279,781.44 is: 419,678.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,836.80 : 1,093,272.48 = 279,781.44 : x
  2. Step 2: Convert to fraction form
    728,836.80/1,093,272.48 = 279,781.44/x
  3. Step 3: Cross multiply
    728,836.80x = 1,093,272.48 × 279,781.44
  4. Step 4: Simplify right side
    728,836.80x = 305,877,348,766.77
  5. Step 5: Solve for x
    x = 305,877,348,766.77/728,836.80
  6. Step 6: Final answer
    x = 419,678.79

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1.5x scale

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.