Home / 689,103.42-1,033,655.13-215,825.82

Finding the Fourth Proportional to 689,103.42, 1,033,655.13 and 215,825.82

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Solution

The fourth proportional to 689,103.42, 1,033,655.13 and 215,825.82 is: 323,738.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,103.42 : 1,033,655.13 = 215,825.82 : x
  2. Step 2: Convert to fraction form
    689,103.42/1,033,655.13 = 215,825.82/x
  3. Step 3: Cross multiply
    689,103.42x = 1,033,655.13 × 215,825.82
  4. Step 4: Simplify right side
    689,103.42x = 223,089,466,029.46
  5. Step 5: Solve for x
    x = 223,089,466,029.46/689,103.42
  6. Step 6: Final answer
    x = 323,738.73

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Similar ratio
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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.