Home / 1,210,912.27-1,671,190.20-667,103.78

Finding the Fourth Proportional to 1,210,912.27, 1,671,190.20 and 667,103.78

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Solution

The fourth proportional to 1,210,912.27, 1,671,190.20 and 667,103.78 is: 920,675.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,912.27 : 1,671,190.20 = 667,103.78 : x
  2. Step 2: Convert to fraction form
    1,210,912.27/1,671,190.20 = 667,103.78/x
  3. Step 3: Cross multiply
    1,210,912.27x = 1,671,190.20 × 667,103.78
  4. Step 4: Simplify right side
    1,210,912.27x = 1,114,857,299,518.96
  5. Step 5: Solve for x
    x = 1,114,857,299,518.96/1,210,912.27
  6. Step 6: Final answer
    x = 920,675.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.