Home / 1,292,500.44-1,782,489.42-809,109.60

Finding the Fourth Proportional to 1,292,500.44, 1,782,489.42 and 809,109.60

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Solution

The fourth proportional to 1,292,500.44, 1,782,489.42 and 809,109.60 is: 1,115,844.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,500.44 : 1,782,489.42 = 809,109.60 : x
  2. Step 2: Convert to fraction form
    1,292,500.44/1,782,489.42 = 809,109.60/x
  3. Step 3: Cross multiply
    1,292,500.44x = 1,782,489.42 × 809,109.60
  4. Step 4: Simplify right side
    1,292,500.44x = 1,442,229,301,620.43
  5. Step 5: Solve for x
    x = 1,442,229,301,620.43/1,292,500.44
  6. Step 6: Final answer
    x = 1,115,844.34

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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.