Home / 821,571.26-1,232,512.42-378,339.26

Finding the Fourth Proportional to 821,571.26, 1,232,512.42 and 378,339.26

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Solution

The fourth proportional to 821,571.26, 1,232,512.42 and 378,339.26 is: 567,580.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,571.26 : 1,232,512.42 = 378,339.26 : x
  2. Step 2: Convert to fraction form
    821,571.26/1,232,512.42 = 378,339.26/x
  3. Step 3: Cross multiply
    821,571.26x = 1,232,512.42 × 378,339.26
  4. Step 4: Simplify right side
    821,571.26x = 466,307,836,923.61
  5. Step 5: Solve for x
    x = 466,307,836,923.61/821,571.26
  6. Step 6: Final answer
    x = 567,580.51

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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.