Home / 820,406.37-1,228,838.07-800,329.71

Finding the Fourth Proportional to 820,406.37, 1,228,838.07 and 800,329.71

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Solution

The fourth proportional to 820,406.37, 1,228,838.07 and 800,329.71 is: 1,198,766.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,406.37 : 1,228,838.07 = 800,329.71 : x
  2. Step 2: Convert to fraction form
    820,406.37/1,228,838.07 = 800,329.71/x
  3. Step 3: Cross multiply
    820,406.37x = 1,228,838.07 × 800,329.71
  4. Step 4: Simplify right side
    820,406.37x = 983,475,616,200.06
  5. Step 5: Solve for x
    x = 983,475,616,200.06/820,406.37
  6. Step 6: Final answer
    x = 1,198,766.43

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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.