Home / 820,736.80-1,228,304.40-687,767.20

Finding the Fourth Proportional to 820,736.80, 1,228,304.40 and 687,767.20

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Solution

The fourth proportional to 820,736.80, 1,228,304.40 and 687,767.20 is: 1,029,303.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,736.80 : 1,228,304.40 = 687,767.20 : x
  2. Step 2: Convert to fraction form
    820,736.80/1,228,304.40 = 687,767.20/x
  3. Step 3: Cross multiply
    820,736.80x = 1,228,304.40 × 687,767.20
  4. Step 4: Simplify right side
    820,736.80x = 844,787,477,935.68
  5. Step 5: Solve for x
    x = 844,787,477,935.68/820,736.80
  6. Step 6: Final answer
    x = 1,029,303.76

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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.