Home / 1,990,406.14-2,980,922.20-1,314,811.78

Finding the Fourth Proportional to 1,990,406.14, 2,980,922.20 and 1,314,811.78

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Solution

The fourth proportional to 1,990,406.14, 2,980,922.20 and 1,314,811.78 is: 1,969,121.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,406.14 : 2,980,922.20 = 1,314,811.78 : x
  2. Step 2: Convert to fraction form
    1,990,406.14/2,980,922.20 = 1,314,811.78/x
  3. Step 3: Cross multiply
    1,990,406.14x = 2,980,922.20 × 1,314,811.78
  4. Step 4: Simplify right side
    1,990,406.14x = 3,919,351,613,084.18
  5. Step 5: Solve for x
    x = 3,919,351,613,084.18/1,990,406.14
  6. Step 6: Final answer
    x = 1,969,121.55

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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.