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Finding the Fourth Proportional to 680,793.93, 939,621.60 and 394,313.94

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Solution

The fourth proportional to 680,793.93, 939,621.60 and 394,313.94 is: 544,226.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,793.93 : 939,621.60 = 394,313.94 : x
  2. Step 2: Convert to fraction form
    680,793.93/939,621.60 = 394,313.94/x
  3. Step 3: Cross multiply
    680,793.93x = 939,621.60 × 394,313.94
  4. Step 4: Simplify right side
    680,793.93x = 370,505,895,205.10
  5. Step 5: Solve for x
    x = 370,505,895,205.10/680,793.93
  6. Step 6: Final answer
    x = 544,226.20

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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.