Home / 812,040.12-1,120,586.76-449,464.68

Finding the Fourth Proportional to 812,040.12, 1,120,586.76 and 449,464.68

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Solution

The fourth proportional to 812,040.12, 1,120,586.76 and 449,464.68 is: 620,245.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,040.12 : 1,120,586.76 = 449,464.68 : x
  2. Step 2: Convert to fraction form
    812,040.12/1,120,586.76 = 449,464.68/x
  3. Step 3: Cross multiply
    812,040.12x = 1,120,586.76 × 449,464.68
  4. Step 4: Simplify right side
    812,040.12x = 503,664,169,495.64
  5. Step 5: Solve for x
    x = 503,664,169,495.64/812,040.12
  6. Step 6: Final answer
    x = 620,245.43

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Double scale
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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.