Home / 1,288,987.11-1,934,662.19-690,623.91

Finding the Fourth Proportional to 1,288,987.11, 1,934,662.19 and 690,623.91

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Solution

The fourth proportional to 1,288,987.11, 1,934,662.19 and 690,623.91 is: 1,036,568.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,987.11 : 1,934,662.19 = 690,623.91 : x
  2. Step 2: Convert to fraction form
    1,288,987.11/1,934,662.19 = 690,623.91/x
  3. Step 3: Cross multiply
    1,288,987.11x = 1,934,662.19 × 690,623.91
  4. Step 4: Simplify right side
    1,288,987.11x = 1,336,123,962,733.84
  5. Step 5: Solve for x
    x = 1,336,123,962,733.84/1,288,987.11
  6. Step 6: Final answer
    x = 1,036,568.91

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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.