Home / 2,118,190.78-3,175,500.39-919,209.88

Finding the Fourth Proportional to 2,118,190.78, 3,175,500.39 and 919,209.88

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Solution

The fourth proportional to 2,118,190.78, 3,175,500.39 and 919,209.88 is: 1,378,039.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118,190.78 : 3,175,500.39 = 919,209.88 : x
  2. Step 2: Convert to fraction form
    2,118,190.78/3,175,500.39 = 919,209.88/x
  3. Step 3: Cross multiply
    2,118,190.78x = 3,175,500.39 × 919,209.88
  4. Step 4: Simplify right side
    2,118,190.78x = 2,918,951,332,431.85
  5. Step 5: Solve for x
    x = 2,918,951,332,431.85/2,118,190.78
  6. Step 6: Final answer
    x = 1,378,039.86

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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.