Home / 787,520.72-1,086,722.15-443,338.80

Finding the Fourth Proportional to 787,520.72, 1,086,722.15 and 443,338.80

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Solution

The fourth proportional to 787,520.72, 1,086,722.15 and 443,338.80 is: 611,775.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,520.72 : 1,086,722.15 = 443,338.80 : x
  2. Step 2: Convert to fraction form
    787,520.72/1,086,722.15 = 443,338.80/x
  3. Step 3: Cross multiply
    787,520.72x = 1,086,722.15 × 443,338.80
  4. Step 4: Simplify right side
    787,520.72x = 481,786,091,697.73
  5. Step 5: Solve for x
    x = 481,786,091,697.73/787,520.72
  6. Step 6: Final answer
    x = 611,775.77

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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.