Home / 680,786.46-939,611.28-394,306.44

Finding the Fourth Proportional to 680,786.46, 939,611.28 and 394,306.44

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Solution

The fourth proportional to 680,786.46, 939,611.28 and 394,306.44 is: 544,215.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,786.46 : 939,611.28 = 394,306.44 : x
  2. Step 2: Convert to fraction form
    680,786.46/939,611.28 = 394,306.44/x
  3. Step 3: Cross multiply
    680,786.46x = 939,611.28 × 394,306.44
  4. Step 4: Simplify right side
    680,786.46x = 370,494,778,800.64
  5. Step 5: Solve for x
    x = 370,494,778,800.64/680,786.46
  6. Step 6: Final answer
    x = 544,215.85

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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.