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Finding the Fourth Proportional to 858,796.40, 1,286,639.40 and 734,380.40

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Solution

The fourth proportional to 858,796.40, 1,286,639.40 and 734,380.40 is: 1,100,240.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,796.40 : 1,286,639.40 = 734,380.40 : x
  2. Step 2: Convert to fraction form
    858,796.40/1,286,639.40 = 734,380.40/x
  3. Step 3: Cross multiply
    858,796.40x = 1,286,639.40 × 734,380.40
  4. Step 4: Simplify right side
    858,796.40x = 944,882,757,227.76
  5. Step 5: Solve for x
    x = 944,882,757,227.76/858,796.40
  6. Step 6: Final answer
    x = 1,100,240.71

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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.