Home / 728,842.80-1,093,281.48-279,787.44

Finding the Fourth Proportional to 728,842.80, 1,093,281.48 and 279,787.44

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Solution

The fourth proportional to 728,842.80, 1,093,281.48 and 279,787.44 is: 419,687.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,842.80 : 1,093,281.48 = 279,787.44 : x
  2. Step 2: Convert to fraction form
    728,842.80/1,093,281.48 = 279,787.44/x
  3. Step 3: Cross multiply
    728,842.80x = 1,093,281.48 × 279,787.44
  4. Step 4: Simplify right side
    728,842.80x = 305,886,426,488.61
  5. Step 5: Solve for x
    x = 305,886,426,488.61/728,842.80
  6. Step 6: Final answer
    x = 419,687.79

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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.