Home / 718,257.75-991,203.33-395,979.38

Finding the Fourth Proportional to 718,257.75, 991,203.33 and 395,979.38

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Solution

The fourth proportional to 718,257.75, 991,203.33 and 395,979.38 is: 546,455.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,257.75 : 991,203.33 = 395,979.38 : x
  2. Step 2: Convert to fraction form
    718,257.75/991,203.33 = 395,979.38/x
  3. Step 3: Cross multiply
    718,257.75x = 991,203.33 × 395,979.38
  4. Step 4: Simplify right side
    718,257.75x = 392,496,083,661.39
  5. Step 5: Solve for x
    x = 392,496,083,661.39/718,257.75
  6. Step 6: Final answer
    x = 546,455.76

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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.