Home / 812,436.93-1,121,149.26-449,853

Finding the Fourth Proportional to 812,436.93, 1,121,149.26 and 449,853

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Solution

The fourth proportional to 812,436.93, 1,121,149.26 and 449,853 is: 620,789.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,436.93 : 1,121,149.26 = 449,853 : x
  2. Step 2: Convert to fraction form
    812,436.93/1,121,149.26 = 449,853/x
  3. Step 3: Cross multiply
    812,436.93x = 1,121,149.26 × 449,853
  4. Step 4: Simplify right side
    812,436.93x = 504,352,358,058.78
  5. Step 5: Solve for x
    x = 504,352,358,058.78/812,436.93
  6. Step 6: Final answer
    x = 620,789.55

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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.