Home / 812,014.56-1,218,103.68-279,465.60

Finding the Fourth Proportional to 812,014.56, 1,218,103.68 and 279,465.60

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Solution

The fourth proportional to 812,014.56, 1,218,103.68 and 279,465.60 is: 419,226.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,014.56 : 1,218,103.68 = 279,465.60 : x
  2. Step 2: Convert to fraction form
    812,014.56/1,218,103.68 = 279,465.60/x
  3. Step 3: Cross multiply
    812,014.56x = 1,218,103.68 × 279,465.60
  4. Step 4: Simplify right side
    812,014.56x = 340,418,075,793.41
  5. Step 5: Solve for x
    x = 340,418,075,793.41/812,014.56
  6. Step 6: Final answer
    x = 419,226.57

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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.