Home / 986,704.72-1,479,932.24-312,792.52

Finding the Fourth Proportional to 986,704.72, 1,479,932.24 and 312,792.52

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Solution

The fourth proportional to 986,704.72, 1,479,932.24 and 312,792.52 is: 469,149.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,704.72 : 1,479,932.24 = 312,792.52 : x
  2. Step 2: Convert to fraction form
    986,704.72/1,479,932.24 = 312,792.52/x
  3. Step 3: Cross multiply
    986,704.72x = 1,479,932.24 × 312,792.52
  4. Step 4: Simplify right side
    986,704.72x = 462,911,734,778.85
  5. Step 5: Solve for x
    x = 462,911,734,778.85/986,704.72
  6. Step 6: Final answer
    x = 469,149.20

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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.