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Finding the Fourth Proportional to 665,114.80, 996,991.80 and 327,636.40

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Solution

The fourth proportional to 665,114.80, 996,991.80 and 327,636.40 is: 491,119.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,114.80 : 996,991.80 = 327,636.40 : x
  2. Step 2: Convert to fraction form
    665,114.80/996,991.80 = 327,636.40/x
  3. Step 3: Cross multiply
    665,114.80x = 996,991.80 × 327,636.40
  4. Step 4: Simplify right side
    665,114.80x = 326,650,804,181.52
  5. Step 5: Solve for x
    x = 326,650,804,181.52/665,114.80
  6. Step 6: Final answer
    x = 491,119.43

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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.