Home / 787,268.09-1,086,534.12-443,170.64

Finding the Fourth Proportional to 787,268.09, 1,086,534.12 and 443,170.64

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Solution

The fourth proportional to 787,268.09, 1,086,534.12 and 443,170.64 is: 611,634.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,268.09 : 1,086,534.12 = 443,170.64 : x
  2. Step 2: Convert to fraction form
    787,268.09/1,086,534.12 = 443,170.64/x
  3. Step 3: Cross multiply
    787,268.09x = 1,086,534.12 × 443,170.64
  4. Step 4: Simplify right side
    787,268.09x = 481,520,015,909.57
  5. Step 5: Solve for x
    x = 481,520,015,909.57/787,268.09
  6. Step 6: Final answer
    x = 611,634.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.