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Finding the Fourth Proportional to 994,019.20, 1,491,028.80 and 488,658.20

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Solution

The fourth proportional to 994,019.20, 1,491,028.80 and 488,658.20 is: 732,987.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    994,019.20 : 1,491,028.80 = 488,658.20 : x
  2. Step 2: Convert to fraction form
    994,019.20/1,491,028.80 = 488,658.20/x
  3. Step 3: Cross multiply
    994,019.20x = 1,491,028.80 × 488,658.20
  4. Step 4: Simplify right side
    994,019.20x = 728,603,449,556.16
  5. Step 5: Solve for x
    x = 728,603,449,556.16/994,019.20
  6. Step 6: Final answer
    x = 732,987.30

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Double scale
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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.