Home / 1,268,910.13-1,751,109.52-688,134.32

Finding the Fourth Proportional to 1,268,910.13, 1,751,109.52 and 688,134.32

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Solution

The fourth proportional to 1,268,910.13, 1,751,109.52 and 688,134.32 is: 949,632.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268,910.13 : 1,751,109.52 = 688,134.32 : x
  2. Step 2: Convert to fraction form
    1,268,910.13/1,751,109.52 = 688,134.32/x
  3. Step 3: Cross multiply
    1,268,910.13x = 1,751,109.52 × 688,134.32
  4. Step 4: Simplify right side
    1,268,910.13x = 1,204,998,561,448.16
  5. Step 5: Solve for x
    x = 1,204,998,561,448.16/1,268,910.13
  6. Step 6: Final answer
    x = 949,632.71

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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.