Home / 1,231,638.22-1,699,657.38-687,769.59

Finding the Fourth Proportional to 1,231,638.22, 1,699,657.38 and 687,769.59

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Solution

The fourth proportional to 1,231,638.22, 1,699,657.38 and 687,769.59 is: 949,120.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,638.22 : 1,699,657.38 = 687,769.59 : x
  2. Step 2: Convert to fraction form
    1,231,638.22/1,699,657.38 = 687,769.59/x
  3. Step 3: Cross multiply
    1,231,638.22x = 1,699,657.38 × 687,769.59
  4. Step 4: Simplify right side
    1,231,638.22x = 1,168,972,659,383.07
  5. Step 5: Solve for x
    x = 1,168,972,659,383.07/1,231,638.22
  6. Step 6: Final answer
    x = 949,120.16

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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.