Home / 682,921.38-942,406.80-376,991.19

Finding the Fourth Proportional to 682,921.38, 942,406.80 and 376,991.19

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Solution

The fourth proportional to 682,921.38, 942,406.80 and 376,991.19 is: 520,234.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,921.38 : 942,406.80 = 376,991.19 : x
  2. Step 2: Convert to fraction form
    682,921.38/942,406.80 = 376,991.19/x
  3. Step 3: Cross multiply
    682,921.38x = 942,406.80 × 376,991.19
  4. Step 4: Simplify right side
    682,921.38x = 355,279,060,996.09
  5. Step 5: Solve for x
    x = 355,279,060,996.09/682,921.38
  6. Step 6: Final answer
    x = 520,234.20

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Half scale
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Double scale
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Similar ratio
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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.