Home / 811,679.60-1,120,150.86-449,097.56

Finding the Fourth Proportional to 811,679.60, 1,120,150.86 and 449,097.56

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Solution

The fourth proportional to 811,679.60, 1,120,150.86 and 449,097.56 is: 619,772.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,679.60 : 1,120,150.86 = 449,097.56 : x
  2. Step 2: Convert to fraction form
    811,679.60/1,120,150.86 = 449,097.56/x
  3. Step 3: Cross multiply
    811,679.60x = 1,120,150.86 × 449,097.56
  4. Step 4: Simplify right side
    811,679.60x = 503,057,018,057.90
  5. Step 5: Solve for x
    x = 503,057,018,057.90/811,679.60
  6. Step 6: Final answer
    x = 619,772.90

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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.