Home / 812,462.64-1,121,184.72-449,878.70

Finding the Fourth Proportional to 812,462.64, 1,121,184.72 and 449,878.70

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Solution

The fourth proportional to 812,462.64, 1,121,184.72 and 449,878.70 is: 620,825.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,462.64 : 1,121,184.72 = 449,878.70 : x
  2. Step 2: Convert to fraction form
    812,462.64/1,121,184.72 = 449,878.70/x
  3. Step 3: Cross multiply
    812,462.64x = 1,121,184.72 × 449,878.70
  4. Step 4: Simplify right side
    812,462.64x = 504,397,118,687.54
  5. Step 5: Solve for x
    x = 504,397,118,687.54/812,462.64
  6. Step 6: Final answer
    x = 620,825.00

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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.