Home / 1,383,930.85-1,908,127.92-1,138,056.43

Finding the Fourth Proportional to 1,383,930.85, 1,908,127.92 and 1,138,056.43

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Solution

The fourth proportional to 1,383,930.85, 1,908,127.92 and 1,138,056.43 is: 1,569,122.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,930.85 : 1,908,127.92 = 1,138,056.43 : x
  2. Step 2: Convert to fraction form
    1,383,930.85/1,908,127.92 = 1,138,056.43/x
  3. Step 3: Cross multiply
    1,383,930.85x = 1,908,127.92 × 1,138,056.43
  4. Step 4: Simplify right side
    1,383,930.85x = 2,171,557,248,618.53
  5. Step 5: Solve for x
    x = 2,171,557,248,618.53/1,383,930.85
  6. Step 6: Final answer
    x = 1,569,122.65

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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.