Home / 821,203.21-1,224,213.96-808,261.64

Finding the Fourth Proportional to 821,203.21, 1,224,213.96 and 808,261.64

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Solution

The fourth proportional to 821,203.21, 1,224,213.96 and 808,261.64 is: 1,204,921.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,203.21 : 1,224,213.96 = 808,261.64 : x
  2. Step 2: Convert to fraction form
    821,203.21/1,224,213.96 = 808,261.64/x
  3. Step 3: Cross multiply
    821,203.21x = 1,224,213.96 × 808,261.64
  4. Step 4: Simplify right side
    821,203.21x = 989,485,172,858.12
  5. Step 5: Solve for x
    x = 989,485,172,858.12/821,203.21
  6. Step 6: Final answer
    x = 1,204,921.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.