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Finding the Fourth Proportional to 665,041.80, 996,882.30 and 327,563.40

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Solution

The fourth proportional to 665,041.80, 996,882.30 and 327,563.40 is: 491,009.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,041.80 : 996,882.30 = 327,563.40 : x
  2. Step 2: Convert to fraction form
    665,041.80/996,882.30 = 327,563.40/x
  3. Step 3: Cross multiply
    665,041.80x = 996,882.30 × 327,563.40
  4. Step 4: Simplify right side
    665,041.80x = 326,542,155,587.82
  5. Step 5: Solve for x
    x = 326,542,155,587.82/665,041.80
  6. Step 6: Final answer
    x = 491,009.97

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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.