Home / 811,808.24-1,120,278.60-449,231.85

Finding the Fourth Proportional to 811,808.24, 1,120,278.60 and 449,231.85

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Solution

The fourth proportional to 811,808.24, 1,120,278.60 and 449,231.85 is: 619,930.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,808.24 : 1,120,278.60 = 449,231.85 : x
  2. Step 2: Convert to fraction form
    811,808.24/1,120,278.60 = 449,231.85/x
  3. Step 3: Cross multiply
    811,808.24x = 1,120,278.60 × 449,231.85
  4. Step 4: Simplify right side
    811,808.24x = 503,264,827,993.41
  5. Step 5: Solve for x
    x = 503,264,827,993.41/811,808.24
  6. Step 6: Final answer
    x = 619,930.68

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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.