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Finding the Fourth Proportional to 1,728,890.88, 2,385,737.94 and 1,003,621.80

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Solution

The fourth proportional to 1,728,890.88, 2,385,737.94 and 1,003,621.80 is: 1,384,921.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728,890.88 : 2,385,737.94 = 1,003,621.80 : x
  2. Step 2: Convert to fraction form
    1,728,890.88/2,385,737.94 = 1,003,621.80/x
  3. Step 3: Cross multiply
    1,728,890.88x = 2,385,737.94 × 1,003,621.80
  4. Step 4: Simplify right side
    1,728,890.88x = 2,394,378,605,671.09
  5. Step 5: Solve for x
    x = 2,394,378,605,671.09/1,728,890.88
  6. Step 6: Final answer
    x = 1,384,921.76

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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.