Home / 787,421.36-1,181,287.60-288,789.68

Finding the Fourth Proportional to 787,421.36, 1,181,287.60 and 288,789.68

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Solution

The fourth proportional to 787,421.36, 1,181,287.60 and 288,789.68 is: 433,241.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,421.36 : 1,181,287.60 = 288,789.68 : x
  2. Step 2: Convert to fraction form
    787,421.36/1,181,287.60 = 288,789.68/x
  3. Step 3: Cross multiply
    787,421.36x = 1,181,287.60 × 288,789.68
  4. Step 4: Simplify right side
    787,421.36x = 341,143,667,991.97
  5. Step 5: Solve for x
    x = 341,143,667,991.97/787,421.36
  6. Step 6: Final answer
    x = 433,241.57

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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.