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Finding the Fourth Proportional to 682,817.19, 942,147.03 and 392,372.65

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Solution

The fourth proportional to 682,817.19, 942,147.03 and 392,372.65 is: 541,393.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,817.19 : 942,147.03 = 392,372.65 : x
  2. Step 2: Convert to fraction form
    682,817.19/942,147.03 = 392,372.65/x
  3. Step 3: Cross multiply
    682,817.19x = 942,147.03 × 392,372.65
  4. Step 4: Simplify right side
    682,817.19x = 369,672,726,850.73
  5. Step 5: Solve for x
    x = 369,672,726,850.73/682,817.19
  6. Step 6: Final answer
    x = 541,393.41

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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.