Home / 1,396,940.91-1,928,305.11-816,352.55

Finding the Fourth Proportional to 1,396,940.91, 1,928,305.11 and 816,352.55

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Solution

The fourth proportional to 1,396,940.91, 1,928,305.11 and 816,352.55 is: 1,126,874.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396,940.91 : 1,928,305.11 = 816,352.55 : x
  2. Step 2: Convert to fraction form
    1,396,940.91/1,928,305.11 = 816,352.55/x
  3. Step 3: Cross multiply
    1,396,940.91x = 1,928,305.11 × 816,352.55
  4. Step 4: Simplify right side
    1,396,940.91x = 1,574,176,784,085.01
  5. Step 5: Solve for x
    x = 1,574,176,784,085.01/1,396,940.91
  6. Step 6: Final answer
    x = 1,126,874.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.