Home / 3,486,286.40-5,222,431.20-1,988,628.80

Finding the Fourth Proportional to 3,486,286.40, 5,222,431.20 and 1,988,628.80

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Solution

The fourth proportional to 3,486,286.40, 5,222,431.20 and 1,988,628.80 is: 2,978,951.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486,286.40 : 5,222,431.20 = 1,988,628.80 : x
  2. Step 2: Convert to fraction form
    3,486,286.40/5,222,431.20 = 1,988,628.80/x
  3. Step 3: Cross multiply
    3,486,286.40x = 5,222,431.20 × 1,988,628.80
  4. Step 4: Simplify right side
    3,486,286.40x = 10,385,477,090,338.56
  5. Step 5: Solve for x
    x = 10,385,477,090,338.56/3,486,286.40
  6. Step 6: Final answer
    x = 2,978,951.21

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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.