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Finding the Fourth Proportional to 665,031.80, 996,867.30 and 327,553.40

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Solution

The fourth proportional to 665,031.80, 996,867.30 and 327,553.40 is: 490,994.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,031.80 : 996,867.30 = 327,553.40 : x
  2. Step 2: Convert to fraction form
    665,031.80/996,867.30 = 327,553.40/x
  3. Step 3: Cross multiply
    665,031.80x = 996,867.30 × 327,553.40
  4. Step 4: Simplify right side
    665,031.80x = 326,527,273,463.82
  5. Step 5: Solve for x
    x = 326,527,273,463.82/665,031.80
  6. Step 6: Final answer
    x = 490,994.98

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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.