Home / 757,286.70-1,136,700.30-378,479.21

Finding the Fourth Proportional to 757,286.70, 1,136,700.30 and 378,479.21

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Solution

The fourth proportional to 757,286.70, 1,136,700.30 and 378,479.21 is: 568,103.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    757,286.70 : 1,136,700.30 = 378,479.21 : x
  2. Step 2: Convert to fraction form
    757,286.70/1,136,700.30 = 378,479.21/x
  3. Step 3: Cross multiply
    757,286.70x = 1,136,700.30 × 378,479.21
  4. Step 4: Simplify right side
    757,286.70x = 430,217,425,867.26
  5. Step 5: Solve for x
    x = 430,217,425,867.26/757,286.70
  6. Step 6: Final answer
    x = 568,103.77

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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.