Home / 1,286,268.88-1,930,559.68-687,741.64

Finding the Fourth Proportional to 1,286,268.88, 1,930,559.68 and 687,741.64

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Solution

The fourth proportional to 1,286,268.88, 1,930,559.68 and 687,741.64 is: 1,032,230.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,268.88 : 1,930,559.68 = 687,741.64 : x
  2. Step 2: Convert to fraction form
    1,286,268.88/1,930,559.68 = 687,741.64/x
  3. Step 3: Cross multiply
    1,286,268.88x = 1,930,559.68 × 687,741.64
  4. Step 4: Simplify right side
    1,286,268.88x = 1,327,726,280,441.08
  5. Step 5: Solve for x
    x = 1,327,726,280,441.08/1,286,268.88
  6. Step 6: Final answer
    x = 1,032,230.74

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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.