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Finding the Fourth Proportional to 665,082.80, 996,943.80 and 327,604.40

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Solution

The fourth proportional to 665,082.80, 996,943.80 and 327,604.40 is: 491,071.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,082.80 : 996,943.80 = 327,604.40 : x
  2. Step 2: Convert to fraction form
    665,082.80/996,943.80 = 327,604.40/x
  3. Step 3: Cross multiply
    665,082.80x = 996,943.80 × 327,604.40
  4. Step 4: Simplify right side
    665,082.80x = 326,603,175,432.72
  5. Step 5: Solve for x
    x = 326,603,175,432.72/665,082.80
  6. Step 6: Final answer
    x = 491,071.45

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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.