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Finding the Fourth Proportional to 680,793.66, 939,352.95 and 394,296.66

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Solution

The fourth proportional to 680,793.66, 939,352.95 and 394,296.66 is: 544,046.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,793.66 : 939,352.95 = 394,296.66 : x
  2. Step 2: Convert to fraction form
    680,793.66/939,352.95 = 394,296.66/x
  3. Step 3: Cross multiply
    680,793.66x = 939,352.95 × 394,296.66
  4. Step 4: Simplify right side
    680,793.66x = 370,383,730,746.15
  5. Step 5: Solve for x
    x = 370,383,730,746.15/680,793.66
  6. Step 6: Final answer
    x = 544,046.97

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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.