Home / 980,800.14-1,471,197.42-261,141.78

Finding the Fourth Proportional to 980,800.14, 1,471,197.42 and 261,141.78

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Solution

The fourth proportional to 980,800.14, 1,471,197.42 and 261,141.78 is: 391,711.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,800.14 : 1,471,197.42 = 261,141.78 : x
  2. Step 2: Convert to fraction form
    980,800.14/1,471,197.42 = 261,141.78/x
  3. Step 3: Cross multiply
    980,800.14x = 1,471,197.42 × 261,141.78
  4. Step 4: Simplify right side
    980,800.14x = 384,191,112,990.21
  5. Step 5: Solve for x
    x = 384,191,112,990.21/980,800.14
  6. Step 6: Final answer
    x = 391,711.93

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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.