Home / 1,991,778.80-2,983,731.60-1,091,609.60

Finding the Fourth Proportional to 1,991,778.80, 2,983,731.60 and 1,091,609.60

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Solution

The fourth proportional to 1,991,778.80, 2,983,731.60 and 1,091,609.60 is: 1,635,256.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,778.80 : 2,983,731.60 = 1,091,609.60 : x
  2. Step 2: Convert to fraction form
    1,991,778.80/2,983,731.60 = 1,091,609.60/x
  3. Step 3: Cross multiply
    1,991,778.80x = 2,983,731.60 × 1,091,609.60
  4. Step 4: Simplify right side
    1,991,778.80x = 3,257,070,058,383.36
  5. Step 5: Solve for x
    x = 3,257,070,058,383.36/1,991,778.80
  6. Step 6: Final answer
    x = 1,635,256.92

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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.