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Finding the Fourth Proportional to 400,978.59, 601,579.36 and 325,912.85

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Solution

The fourth proportional to 400,978.59, 601,579.36 and 325,912.85 is: 488,959.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,978.59 : 601,579.36 = 325,912.85 : x
  2. Step 2: Convert to fraction form
    400,978.59/601,579.36 = 325,912.85/x
  3. Step 3: Cross multiply
    400,978.59x = 601,579.36 × 325,912.85
  4. Step 4: Simplify right side
    400,978.59x = 196,062,443,718.78
  5. Step 5: Solve for x
    x = 196,062,443,718.78/400,978.59
  6. Step 6: Final answer
    x = 488,959.88

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