Home / 641,786.26-885,631.31-351,342.18

Finding the Fourth Proportional to 641,786.26, 885,631.31 and 351,342.18

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Solution

The fourth proportional to 641,786.26, 885,631.31 and 351,342.18 is: 484,833.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,786.26 : 885,631.31 = 351,342.18 : x
  2. Step 2: Convert to fraction form
    641,786.26/885,631.31 = 351,342.18/x
  3. Step 3: Cross multiply
    641,786.26x = 885,631.31 × 351,342.18
  4. Step 4: Simplify right side
    641,786.26x = 311,159,635,131.66
  5. Step 5: Solve for x
    x = 311,159,635,131.66/641,786.26
  6. Step 6: Final answer
    x = 484,833.74

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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.