Home / 428,979.75-591,999.87-235,397.44

Finding the Fourth Proportional to 428,979.75, 591,999.87 and 235,397.44

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Solution

The fourth proportional to 428,979.75, 591,999.87 and 235,397.44 is: 324,852.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,979.75 : 591,999.87 = 235,397.44 : x
  2. Step 2: Convert to fraction form
    428,979.75/591,999.87 = 235,397.44/x
  3. Step 3: Cross multiply
    428,979.75x = 591,999.87 × 235,397.44
  4. Step 4: Simplify right side
    428,979.75x = 139,355,253,878.33
  5. Step 5: Solve for x
    x = 139,355,253,878.33/428,979.75
  6. Step 6: Final answer
    x = 324,852.76

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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.