Home / 680,846.50-1,021,177.81-281,431.86

Finding the Fourth Proportional to 680,846.50, 1,021,177.81 and 281,431.86

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Solution

The fourth proportional to 680,846.50, 1,021,177.81 and 281,431.86 is: 422,109.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,846.50 : 1,021,177.81 = 281,431.86 : x
  2. Step 2: Convert to fraction form
    680,846.50/1,021,177.81 = 281,431.86/x
  3. Step 3: Cross multiply
    680,846.50x = 1,021,177.81 × 281,431.86
  4. Step 4: Simplify right side
    680,846.50x = 287,391,970,459.03
  5. Step 5: Solve for x
    x = 287,391,970,459.03/680,846.50
  6. Step 6: Final answer
    x = 422,109.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.