Home / 1,383,078.20-1,907,574.64-1,228,192.40

Finding the Fourth Proportional to 1,383,078.20, 1,907,574.64 and 1,228,192.40

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Solution

The fourth proportional to 1,383,078.20, 1,907,574.64 and 1,228,192.40 is: 1,693,952.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,078.20 : 1,907,574.64 = 1,228,192.40 : x
  2. Step 2: Convert to fraction form
    1,383,078.20/1,907,574.64 = 1,228,192.40/x
  3. Step 3: Cross multiply
    1,383,078.20x = 1,907,574.64 × 1,228,192.40
  4. Step 4: Simplify right side
    1,383,078.20x = 2,342,868,675,280.74
  5. Step 5: Solve for x
    x = 2,342,868,675,280.74/1,383,078.20
  6. Step 6: Final answer
    x = 1,693,952.43

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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.