Home / 812,891.80-1,121,159.17-554,976.61

Finding the Fourth Proportional to 812,891.80, 1,121,159.17 and 554,976.61

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Solution

The fourth proportional to 812,891.80, 1,121,159.17 and 554,976.61 is: 765,436.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,891.80 : 1,121,159.17 = 554,976.61 : x
  2. Step 2: Convert to fraction form
    812,891.80/1,121,159.17 = 554,976.61/x
  3. Step 3: Cross multiply
    812,891.80x = 1,121,159.17 × 554,976.61
  4. Step 4: Simplify right side
    812,891.80x = 622,217,119,634.36
  5. Step 5: Solve for x
    x = 622,217,119,634.36/812,891.80
  6. Step 6: Final answer
    x = 765,436.58

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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.