Home / 820,463.46-1,230,839.64-280,592.82

Finding the Fourth Proportional to 820,463.46, 1,230,839.64 and 280,592.82

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Solution

The fourth proportional to 820,463.46, 1,230,839.64 and 280,592.82 is: 420,938.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,463.46 : 1,230,839.64 = 280,592.82 : x
  2. Step 2: Convert to fraction form
    820,463.46/1,230,839.64 = 280,592.82/x
  3. Step 3: Cross multiply
    820,463.46x = 1,230,839.64 × 280,592.82
  4. Step 4: Simplify right side
    820,463.46x = 345,364,765,555.39
  5. Step 5: Solve for x
    x = 345,364,765,555.39/820,463.46
  6. Step 6: Final answer
    x = 420,938.63

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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.