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Finding the Fourth Proportional to 486,031.60, 729,047.40 and 327,401.20

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Solution

The fourth proportional to 486,031.60, 729,047.40 and 327,401.20 is: 491,101.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,031.60 : 729,047.40 = 327,401.20 : x
  2. Step 2: Convert to fraction form
    486,031.60/729,047.40 = 327,401.20/x
  3. Step 3: Cross multiply
    486,031.60x = 729,047.40 × 327,401.20
  4. Step 4: Simplify right side
    486,031.60x = 238,690,993,616.88
  5. Step 5: Solve for x
    x = 238,690,993,616.88/486,031.60
  6. Step 6: Final answer
    x = 491,101.80

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Similar ratio
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1.5x scale

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.