Home / 820,439.46-1,230,803.64-280,568.79

Finding the Fourth Proportional to 820,439.46, 1,230,803.64 and 280,568.79

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Solution

The fourth proportional to 820,439.46, 1,230,803.64 and 280,568.79 is: 420,902.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,439.46 : 1,230,803.64 = 280,568.79 : x
  2. Step 2: Convert to fraction form
    820,439.46/1,230,803.64 = 280,568.79/x
  3. Step 3: Cross multiply
    820,439.46x = 1,230,803.64 × 280,568.79
  4. Step 4: Simplify right side
    820,439.46x = 345,325,088,002.40
  5. Step 5: Solve for x
    x = 345,325,088,002.40/820,439.46
  6. Step 6: Final answer
    x = 420,902.58

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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.