Home / 687,748.35-949,074.24-412,261.82

Finding the Fourth Proportional to 687,748.35, 949,074.24 and 412,261.82

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Solution

The fourth proportional to 687,748.35, 949,074.24 and 412,261.82 is: 568,910.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,748.35 : 949,074.24 = 412,261.82 : x
  2. Step 2: Convert to fraction form
    687,748.35/949,074.24 = 412,261.82/x
  3. Step 3: Cross multiply
    687,748.35x = 949,074.24 × 412,261.82
  4. Step 4: Simplify right side
    687,748.35x = 391,267,073,497.52
  5. Step 5: Solve for x
    x = 391,267,073,497.52/687,748.35
  6. Step 6: Final answer
    x = 568,910.23

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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.