Home / 812,361.67-1,121,094.10-449,785.51

Finding the Fourth Proportional to 812,361.67, 1,121,094.10 and 449,785.51

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Solution

The fourth proportional to 812,361.67, 1,121,094.10 and 449,785.51 is: 620,723.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,361.67 : 1,121,094.10 = 449,785.51 : x
  2. Step 2: Convert to fraction form
    812,361.67/1,121,094.10 = 449,785.51/x
  3. Step 3: Cross multiply
    812,361.67x = 1,121,094.10 × 449,785.51
  4. Step 4: Simplify right side
    812,361.67x = 504,251,879,848.22
  5. Step 5: Solve for x
    x = 504,251,879,848.22/812,361.67
  6. Step 6: Final answer
    x = 620,723.38

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Double scale
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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.