Home / 812,352.62-1,121,081.64-449,776.47

Finding the Fourth Proportional to 812,352.62, 1,121,081.64 and 449,776.47

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Solution

The fourth proportional to 812,352.62, 1,121,081.64 and 449,776.47 is: 620,710.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,352.62 : 1,121,081.64 = 449,776.47 : x
  2. Step 2: Convert to fraction form
    812,352.62/1,121,081.64 = 449,776.47/x
  3. Step 3: Cross multiply
    812,352.62x = 1,121,081.64 × 449,776.47
  4. Step 4: Simplify right side
    812,352.62x = 504,236,138,416.96
  5. Step 5: Solve for x
    x = 504,236,138,416.96/812,352.62
  6. Step 6: Final answer
    x = 620,710.92

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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.