Home / 1,121,288.16-1,682,153.78-411,322.36

Finding the Fourth Proportional to 1,121,288.16, 1,682,153.78 and 411,322.36

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Solution

The fourth proportional to 1,121,288.16, 1,682,153.78 and 411,322.36 is: 617,064.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,288.16 : 1,682,153.78 = 411,322.36 : x
  2. Step 2: Convert to fraction form
    1,121,288.16/1,682,153.78 = 411,322.36/x
  3. Step 3: Cross multiply
    1,121,288.16x = 1,682,153.78 × 411,322.36
  4. Step 4: Simplify right side
    1,121,288.16x = 691,907,462,672.52
  5. Step 5: Solve for x
    x = 691,907,462,672.52/1,121,288.16
  6. Step 6: Final answer
    x = 617,064.81

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1.5x scale

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.