Home / 2,190,999.20-3,286,498.80-992,919.20

Finding the Fourth Proportional to 2,190,999.20, 3,286,498.80 and 992,919.20

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Solution

The fourth proportional to 2,190,999.20, 3,286,498.80 and 992,919.20 is: 1,489,378.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190,999.20 : 3,286,498.80 = 992,919.20 : x
  2. Step 2: Convert to fraction form
    2,190,999.20/3,286,498.80 = 992,919.20/x
  3. Step 3: Cross multiply
    2,190,999.20x = 3,286,498.80 × 992,919.20
  4. Step 4: Simplify right side
    2,190,999.20x = 3,263,227,759,296.96
  5. Step 5: Solve for x
    x = 3,263,227,759,296.96/2,190,999.20
  6. Step 6: Final answer
    x = 1,489,378.80

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Similar ratio
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1.5x scale

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.