Home / 691,331.78-1,036,998.30-192,695.78

Finding the Fourth Proportional to 691,331.78, 1,036,998.30 and 192,695.78

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Solution

The fourth proportional to 691,331.78, 1,036,998.30 and 192,695.78 is: 289,043.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,331.78 : 1,036,998.30 = 192,695.78 : x
  2. Step 2: Convert to fraction form
    691,331.78/1,036,998.30 = 192,695.78/x
  3. Step 3: Cross multiply
    691,331.78x = 1,036,998.30 × 192,695.78
  4. Step 4: Simplify right side
    691,331.78x = 199,825,196,277.17
  5. Step 5: Solve for x
    x = 199,825,196,277.17/691,331.78
  6. Step 6: Final answer
    x = 289,043.85

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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.