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Finding the Fourth Proportional to 680,736.42, 939,383.46 and 374,806.44

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Solution

The fourth proportional to 680,736.42, 939,383.46 and 374,806.44 is: 517,214.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,736.42 : 939,383.46 = 374,806.44 : x
  2. Step 2: Convert to fraction form
    680,736.42/939,383.46 = 374,806.44/x
  3. Step 3: Cross multiply
    680,736.42x = 939,383.46 × 374,806.44
  4. Step 4: Simplify right side
    680,736.42x = 352,086,970,437.48
  5. Step 5: Solve for x
    x = 352,086,970,437.48/680,736.42
  6. Step 6: Final answer
    x = 517,214.83

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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.