Home / 1,998,131.40-2,991,292.20-1,324,972.80

Finding the Fourth Proportional to 1,998,131.40, 2,991,292.20 and 1,324,972.80

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Solution

The fourth proportional to 1,998,131.40, 2,991,292.20 and 1,324,972.80 is: 1,983,543.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998,131.40 : 2,991,292.20 = 1,324,972.80 : x
  2. Step 2: Convert to fraction form
    1,998,131.40/2,991,292.20 = 1,324,972.80/x
  3. Step 3: Cross multiply
    1,998,131.40x = 2,991,292.20 × 1,324,972.80
  4. Step 4: Simplify right side
    1,998,131.40x = 3,963,380,801,852.16
  5. Step 5: Solve for x
    x = 3,963,380,801,852.16/1,998,131.40
  6. Step 6: Final answer
    x = 1,983,543.63

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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.