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Finding the Fourth Proportional to 423,629.16, 635,589.56 and 265,672.68

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Solution

The fourth proportional to 423,629.16, 635,589.56 and 265,672.68 is: 398,600.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,629.16 : 635,589.56 = 265,672.68 : x
  2. Step 2: Convert to fraction form
    423,629.16/635,589.56 = 265,672.68/x
  3. Step 3: Cross multiply
    423,629.16x = 635,589.56 × 265,672.68
  4. Step 4: Simplify right side
    423,629.16x = 168,858,781,785.22
  5. Step 5: Solve for x
    x = 168,858,781,785.22/423,629.16
  6. Step 6: Final answer
    x = 398,600.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.