Home / 1,998,309.42-2,998,216.82-1,200,147.43

Finding the Fourth Proportional to 1,998,309.42, 2,998,216.82 and 1,200,147.43

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Solution

The fourth proportional to 1,998,309.42, 2,998,216.82 and 1,200,147.43 is: 1,800,673.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998,309.42 : 2,998,216.82 = 1,200,147.43 : x
  2. Step 2: Convert to fraction form
    1,998,309.42/2,998,216.82 = 1,200,147.43/x
  3. Step 3: Cross multiply
    1,998,309.42x = 2,998,216.82 × 1,200,147.43
  4. Step 4: Simplify right side
    1,998,309.42x = 3,598,302,211,105.77
  5. Step 5: Solve for x
    x = 3,598,302,211,105.77/1,998,309.42
  6. Step 6: Final answer
    x = 1,800,673.20

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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.