Home / 818,065.26-1,227,153.90-278,101.78

Finding the Fourth Proportional to 818,065.26, 1,227,153.90 and 278,101.78

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Solution

The fourth proportional to 818,065.26, 1,227,153.90 and 278,101.78 is: 417,171.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,065.26 : 1,227,153.90 = 278,101.78 : x
  2. Step 2: Convert to fraction form
    818,065.26/1,227,153.90 = 278,101.78/x
  3. Step 3: Cross multiply
    818,065.26x = 1,227,153.90 × 278,101.78
  4. Step 4: Simplify right side
    818,065.26x = 341,273,683,923.94
  5. Step 5: Solve for x
    x = 341,273,683,923.94/818,065.26
  6. Step 6: Final answer
    x = 417,171.71

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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.