Home / 928,147.74-1,392,021.12-329,128.44

Finding the Fourth Proportional to 928,147.74, 1,392,021.12 and 329,128.44

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Solution

The fourth proportional to 928,147.74, 1,392,021.12 and 329,128.44 is: 493,621.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,147.74 : 1,392,021.12 = 329,128.44 : x
  2. Step 2: Convert to fraction form
    928,147.74/1,392,021.12 = 329,128.44/x
  3. Step 3: Cross multiply
    928,147.74x = 1,392,021.12 × 329,128.44
  4. Step 4: Simplify right side
    928,147.74x = 458,153,739,672.65
  5. Step 5: Solve for x
    x = 458,153,739,672.65/928,147.74
  6. Step 6: Final answer
    x = 493,621.56

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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.