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Finding the Fourth Proportional to 531,105.20, 796,657.80 and 489,114.80

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Solution

The fourth proportional to 531,105.20, 796,657.80 and 489,114.80 is: 733,672.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,105.20 : 796,657.80 = 489,114.80 : x
  2. Step 2: Convert to fraction form
    531,105.20/796,657.80 = 489,114.80/x
  3. Step 3: Cross multiply
    531,105.20x = 796,657.80 × 489,114.80
  4. Step 4: Simplify right side
    531,105.20x = 389,657,120,515.44
  5. Step 5: Solve for x
    x = 389,657,120,515.44/531,105.20
  6. Step 6: Final answer
    x = 733,672.20

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Similar ratio
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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.