Home / 728,878.80-1,093,633.94-391,525.81

Finding the Fourth Proportional to 728,878.80, 1,093,633.94 and 391,525.81

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Solution

The fourth proportional to 728,878.80, 1,093,633.94 and 391,525.81 is: 587,458.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,878.80 : 1,093,633.94 = 391,525.81 : x
  2. Step 2: Convert to fraction form
    728,878.80/1,093,633.94 = 391,525.81/x
  3. Step 3: Cross multiply
    728,878.80x = 1,093,633.94 × 391,525.81
  4. Step 4: Simplify right side
    728,878.80x = 428,185,914,201.99
  5. Step 5: Solve for x
    x = 428,185,914,201.99/728,878.80
  6. Step 6: Final answer
    x = 587,458.32

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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.