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Finding the Fourth Proportional to 665,061.80, 996,912.30 and 327,583.40

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Solution

The fourth proportional to 665,061.80, 996,912.30 and 327,583.40 is: 491,039.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,061.80 : 996,912.30 = 327,583.40 : x
  2. Step 2: Convert to fraction form
    665,061.80/996,912.30 = 327,583.40/x
  3. Step 3: Cross multiply
    665,061.80x = 996,912.30 × 327,583.40
  4. Step 4: Simplify right side
    665,061.80x = 326,571,920,735.82
  5. Step 5: Solve for x
    x = 326,571,920,735.82/665,061.80
  6. Step 6: Final answer
    x = 491,039.96

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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.