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Finding the Fourth Proportional to 1,797,322.39, 2,697,322.55 and 1,318,786.77

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Solution

The fourth proportional to 1,797,322.39, 2,697,322.55 and 1,318,786.77 is: 1,979,162.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,797,322.39 : 2,697,322.55 = 1,318,786.77 : x
  2. Step 2: Convert to fraction form
    1,797,322.39/2,697,322.55 = 1,318,786.77/x
  3. Step 3: Cross multiply
    1,797,322.39x = 2,697,322.55 × 1,318,786.77
  4. Step 4: Simplify right side
    1,797,322.39x = 3,557,193,273,282.12
  5. Step 5: Solve for x
    x = 3,557,193,273,282.12/1,797,322.39
  6. Step 6: Final answer
    x = 1,979,162.61

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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.