Home / 766,121.91-1,148,758.21-355,343.16

Finding the Fourth Proportional to 766,121.91, 1,148,758.21 and 355,343.16

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Solution

The fourth proportional to 766,121.91, 1,148,758.21 and 355,343.16 is: 532,817.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,121.91 : 1,148,758.21 = 355,343.16 : x
  2. Step 2: Convert to fraction form
    766,121.91/1,148,758.21 = 355,343.16/x
  3. Step 3: Cross multiply
    766,121.91x = 1,148,758.21 × 355,343.16
  4. Step 4: Simplify right side
    766,121.91x = 408,203,377,169.37
  5. Step 5: Solve for x
    x = 408,203,377,169.37/766,121.91
  6. Step 6: Final answer
    x = 532,817.79

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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.