Home / 819,017.43-1,228,588.34-279,105.90

Finding the Fourth Proportional to 819,017.43, 1,228,588.34 and 279,105.90

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Solution

The fourth proportional to 819,017.43, 1,228,588.34 and 279,105.90 is: 418,680.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,017.43 : 1,228,588.34 = 279,105.90 : x
  2. Step 2: Convert to fraction form
    819,017.43/1,228,588.34 = 279,105.90/x
  3. Step 3: Cross multiply
    819,017.43x = 1,228,588.34 × 279,105.90
  4. Step 4: Simplify right side
    819,017.43x = 342,906,254,365.21
  5. Step 5: Solve for x
    x = 342,906,254,365.21/819,017.43
  6. Step 6: Final answer
    x = 418,680.04

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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.