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Finding the Fourth Proportional to 428,620.86, 591,377.04 and 337,694.58

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Solution

The fourth proportional to 428,620.86, 591,377.04 and 337,694.58 is: 465,924.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,620.86 : 591,377.04 = 337,694.58 : x
  2. Step 2: Convert to fraction form
    428,620.86/591,377.04 = 337,694.58/x
  3. Step 3: Cross multiply
    428,620.86x = 591,377.04 × 337,694.58
  4. Step 4: Simplify right side
    428,620.86x = 199,704,821,144.44
  5. Step 5: Solve for x
    x = 199,704,821,144.44/428,620.86
  6. Step 6: Final answer
    x = 465,924.18

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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.