Home / 812,484.30-1,121,214.66-449,900.37

Finding the Fourth Proportional to 812,484.30, 1,121,214.66 and 449,900.37

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Solution

The fourth proportional to 812,484.30, 1,121,214.66 and 449,900.37 is: 620,854.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,484.30 : 1,121,214.66 = 449,900.37 : x
  2. Step 2: Convert to fraction form
    812,484.30/1,121,214.66 = 449,900.37/x
  3. Step 3: Cross multiply
    812,484.30x = 1,121,214.66 × 449,900.37
  4. Step 4: Simplify right side
    812,484.30x = 504,434,890,383.42
  5. Step 5: Solve for x
    x = 504,434,890,383.42/812,484.30
  6. Step 6: Final answer
    x = 620,854.94

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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.