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Finding the Fourth Proportional to 512,464.20, 768,696.30 and 489,136.20

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Solution

The fourth proportional to 512,464.20, 768,696.30 and 489,136.20 is: 733,704.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,464.20 : 768,696.30 = 489,136.20 : x
  2. Step 2: Convert to fraction form
    512,464.20/768,696.30 = 489,136.20/x
  3. Step 3: Cross multiply
    512,464.20x = 768,696.30 × 489,136.20
  4. Step 4: Simplify right side
    512,464.20x = 375,997,187,136.06
  5. Step 5: Solve for x
    x = 375,997,187,136.06/512,464.20
  6. Step 6: Final answer
    x = 733,704.30

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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.