Home / 642,408.52-886,552.16-355,928.52

Finding the Fourth Proportional to 642,408.52, 886,552.16 and 355,928.52

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Solution

The fourth proportional to 642,408.52, 886,552.16 and 355,928.52 is: 491,197.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,408.52 : 886,552.16 = 355,928.52 : x
  2. Step 2: Convert to fraction form
    642,408.52/886,552.16 = 355,928.52/x
  3. Step 3: Cross multiply
    642,408.52x = 886,552.16 × 355,928.52
  4. Step 4: Simplify right side
    642,408.52x = 315,549,198,211.60
  5. Step 5: Solve for x
    x = 315,549,198,211.60/642,408.52
  6. Step 6: Final answer
    x = 491,197.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.