Home / 812,463.17-1,121,185.44-449,879.24

Finding the Fourth Proportional to 812,463.17, 1,121,185.44 and 449,879.24

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Solution

The fourth proportional to 812,463.17, 1,121,185.44 and 449,879.24 is: 620,825.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,463.17 : 1,121,185.44 = 449,879.24 : x
  2. Step 2: Convert to fraction form
    812,463.17/1,121,185.44 = 449,879.24/x
  3. Step 3: Cross multiply
    812,463.17x = 1,121,185.44 × 449,879.24
  4. Step 4: Simplify right side
    812,463.17x = 504,398,051,396.87
  5. Step 5: Solve for x
    x = 504,398,051,396.87/812,463.17
  6. Step 6: Final answer
    x = 620,825.75

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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.