Home / 1,328,836.80-1,993,255.20-1,320,963.60

Finding the Fourth Proportional to 1,328,836.80, 1,993,255.20 and 1,320,963.60

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Solution

The fourth proportional to 1,328,836.80, 1,993,255.20 and 1,320,963.60 is: 1,981,445.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,836.80 : 1,993,255.20 = 1,320,963.60 : x
  2. Step 2: Convert to fraction form
    1,328,836.80/1,993,255.20 = 1,320,963.60/x
  3. Step 3: Cross multiply
    1,328,836.80x = 1,993,255.20 × 1,320,963.60
  4. Step 4: Simplify right side
    1,328,836.80x = 2,633,017,564,710.72
  5. Step 5: Solve for x
    x = 2,633,017,564,710.72/1,328,836.80
  6. Step 6: Final answer
    x = 1,981,445.40

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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.