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Finding the Fourth Proportional to 513,679.60, 770,519.40 and 327,516.40

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Solution

The fourth proportional to 513,679.60, 770,519.40 and 327,516.40 is: 491,274.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,679.60 : 770,519.40 = 327,516.40 : x
  2. Step 2: Convert to fraction form
    513,679.60/770,519.40 = 327,516.40/x
  3. Step 3: Cross multiply
    513,679.60x = 770,519.40 × 327,516.40
  4. Step 4: Simplify right side
    513,679.60x = 252,357,740,018.16
  5. Step 5: Solve for x
    x = 252,357,740,018.16/513,679.60
  6. Step 6: Final answer
    x = 491,274.60

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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.