Home / 642,283.22-886,350.85-355,821.86

Finding the Fourth Proportional to 642,283.22, 886,350.85 and 355,821.86

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Solution

The fourth proportional to 642,283.22, 886,350.85 and 355,821.86 is: 491,034.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,283.22 : 886,350.85 = 355,821.86 : x
  2. Step 2: Convert to fraction form
    642,283.22/886,350.85 = 355,821.86/x
  3. Step 3: Cross multiply
    642,283.22x = 886,350.85 × 355,821.86
  4. Step 4: Simplify right side
    642,283.22x = 315,383,008,059.58
  5. Step 5: Solve for x
    x = 315,383,008,059.58/642,283.22
  6. Step 6: Final answer
    x = 491,034.17

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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.