Home / 998,942.22-1,378,542.96-636,288.48

Finding the Fourth Proportional to 998,942.22, 1,378,542.96 and 636,288.48

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Solution

The fourth proportional to 998,942.22, 1,378,542.96 and 636,288.48 is: 878,079.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,942.22 : 1,378,542.96 = 636,288.48 : x
  2. Step 2: Convert to fraction form
    998,942.22/1,378,542.96 = 636,288.48/x
  3. Step 3: Cross multiply
    998,942.22x = 1,378,542.96 × 636,288.48
  4. Step 4: Simplify right side
    998,942.22x = 877,151,004,633.10
  5. Step 5: Solve for x
    x = 877,151,004,633.10/998,942.22
  6. Step 6: Final answer
    x = 878,079.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.