Home / 1,181,039.76-1,629,819.90-664,791.12

Finding the Fourth Proportional to 1,181,039.76, 1,629,819.90 and 664,791.12

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Solution

The fourth proportional to 1,181,039.76, 1,629,819.90 and 664,791.12 is: 917,403.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181,039.76 : 1,629,819.90 = 664,791.12 : x
  2. Step 2: Convert to fraction form
    1,181,039.76/1,629,819.90 = 664,791.12/x
  3. Step 3: Cross multiply
    1,181,039.76x = 1,629,819.90 × 664,791.12
  4. Step 4: Simplify right side
    1,181,039.76x = 1,083,489,796,719.29
  5. Step 5: Solve for x
    x = 1,083,489,796,719.29/1,181,039.76
  6. Step 6: Final answer
    x = 917,403.32

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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.