Home / 755,998.20-1,133,997.30-378,084.60

Finding the Fourth Proportional to 755,998.20, 1,133,997.30 and 378,084.60

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Solution

The fourth proportional to 755,998.20, 1,133,997.30 and 378,084.60 is: 567,126.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,998.20 : 1,133,997.30 = 378,084.60 : x
  2. Step 2: Convert to fraction form
    755,998.20/1,133,997.30 = 378,084.60/x
  3. Step 3: Cross multiply
    755,998.20x = 1,133,997.30 × 378,084.60
  4. Step 4: Simplify right side
    755,998.20x = 428,746,915,571.58
  5. Step 5: Solve for x
    x = 428,746,915,571.58/755,998.20
  6. Step 6: Final answer
    x = 567,126.90

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.