Home / 642,284.22-886,352.23-355,822.86

Finding the Fourth Proportional to 642,284.22, 886,352.23 and 355,822.86

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Solution

The fourth proportional to 642,284.22, 886,352.23 and 355,822.86 is: 491,035.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,284.22 : 886,352.23 = 355,822.86 : x
  2. Step 2: Convert to fraction form
    642,284.22/886,352.23 = 355,822.86/x
  3. Step 3: Cross multiply
    642,284.22x = 886,352.23 × 355,822.86
  4. Step 4: Simplify right side
    642,284.22x = 315,384,385,445.98
  5. Step 5: Solve for x
    x = 315,384,385,445.98/642,284.22
  6. Step 6: Final answer
    x = 491,035.55

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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.