Home / 811,685.60-1,120,159.14-449,103.56

Finding the Fourth Proportional to 811,685.60, 1,120,159.14 and 449,103.56

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Solution

The fourth proportional to 811,685.60, 1,120,159.14 and 449,103.56 is: 619,781.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,685.60 : 1,120,159.14 = 449,103.56 : x
  2. Step 2: Convert to fraction form
    811,685.60/1,120,159.14 = 449,103.56/x
  3. Step 3: Cross multiply
    811,685.60x = 1,120,159.14 × 449,103.56
  4. Step 4: Simplify right side
    811,685.60x = 503,067,457,540.54
  5. Step 5: Solve for x
    x = 503,067,457,540.54/811,685.60
  6. Step 6: Final answer
    x = 619,781.18

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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.