Home / 716,467.11-988,724.57-394,170.29

Finding the Fourth Proportional to 716,467.11, 988,724.57 and 394,170.29

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Solution

The fourth proportional to 716,467.11, 988,724.57 and 394,170.29 is: 543,954.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,467.11 : 988,724.57 = 394,170.29 : x
  2. Step 2: Convert to fraction form
    716,467.11/988,724.57 = 394,170.29/x
  3. Step 3: Cross multiply
    716,467.11x = 988,724.57 × 394,170.29
  4. Step 4: Simplify right side
    716,467.11x = 389,725,843,572.55
  5. Step 5: Solve for x
    x = 389,725,843,572.55/716,467.11
  6. Step 6: Final answer
    x = 543,954.97

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Double scale
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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.