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Finding the Fourth Proportional to 3,198,758.85, 4,798,978.44 and 1,149,626.21

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Solution

The fourth proportional to 3,198,758.85, 4,798,978.44 and 1,149,626.21 is: 1,724,741.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198,758.85 : 4,798,978.44 = 1,149,626.21 : x
  2. Step 2: Convert to fraction form
    3,198,758.85/4,798,978.44 = 1,149,626.21/x
  3. Step 3: Cross multiply
    3,198,758.85x = 4,798,978.44 × 1,149,626.21
  4. Step 4: Simplify right side
    3,198,758.85x = 5,517,031,395,848.91
  5. Step 5: Solve for x
    x = 5,517,031,395,848.91/3,198,758.85
  6. Step 6: Final answer
    x = 1,724,741.27

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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.