Home / 1,325,919.60-1,990,613.88-787,159.44

Finding the Fourth Proportional to 1,325,919.60, 1,990,613.88 and 787,159.44

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Solution

The fourth proportional to 1,325,919.60, 1,990,613.88 and 787,159.44 is: 1,181,768.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,919.60 : 1,990,613.88 = 787,159.44 : x
  2. Step 2: Convert to fraction form
    1,325,919.60/1,990,613.88 = 787,159.44/x
  3. Step 3: Cross multiply
    1,325,919.60x = 1,990,613.88 × 787,159.44
  4. Step 4: Simplify right side
    1,325,919.60x = 1,566,930,507,037.03
  5. Step 5: Solve for x
    x = 1,566,930,507,037.03/1,325,919.60
  6. Step 6: Final answer
    x = 1,181,768.87

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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.