Home / 728,876.80-1,093,630.94-391,523.81

Finding the Fourth Proportional to 728,876.80, 1,093,630.94 and 391,523.81

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Solution

The fourth proportional to 728,876.80, 1,093,630.94 and 391,523.81 is: 587,455.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,876.80 : 1,093,630.94 = 391,523.81 : x
  2. Step 2: Convert to fraction form
    728,876.80/1,093,630.94 = 391,523.81/x
  3. Step 3: Cross multiply
    728,876.80x = 1,093,630.94 × 391,523.81
  4. Step 4: Simplify right side
    728,876.80x = 428,182,550,405.06
  5. Step 5: Solve for x
    x = 428,182,550,405.06/728,876.80
  6. Step 6: Final answer
    x = 587,455.32

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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.