Home / 639,015.58-958,722.28-189,738.80

Finding the Fourth Proportional to 639,015.58, 958,722.28 and 189,738.80

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Solution

The fourth proportional to 639,015.58, 958,722.28 and 189,738.80 is: 284,667.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,015.58 : 958,722.28 = 189,738.80 : x
  2. Step 2: Convert to fraction form
    639,015.58/958,722.28 = 189,738.80/x
  3. Step 3: Cross multiply
    639,015.58x = 958,722.28 × 189,738.80
  4. Step 4: Simplify right side
    639,015.58x = 181,906,818,660.53
  5. Step 5: Solve for x
    x = 181,906,818,660.53/639,015.58
  6. Step 6: Final answer
    x = 284,667.27

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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.