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Finding the Fourth Proportional to 513,231.20, 769,846.80 and 488,736.80

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Solution

The fourth proportional to 513,231.20, 769,846.80 and 488,736.80 is: 733,105.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,231.20 : 769,846.80 = 488,736.80 : x
  2. Step 2: Convert to fraction form
    513,231.20/769,846.80 = 488,736.80/x
  3. Step 3: Cross multiply
    513,231.20x = 769,846.80 × 488,736.80
  4. Step 4: Simplify right side
    513,231.20x = 376,252,461,522.24
  5. Step 5: Solve for x
    x = 376,252,461,522.24/513,231.20
  6. Step 6: Final answer
    x = 733,105.20

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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.