Home / 680,847-1,021,178.57-281,432.36

Finding the Fourth Proportional to 680,847, 1,021,178.57 and 281,432.36

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Solution

The fourth proportional to 680,847, 1,021,178.57 and 281,432.36 is: 422,110.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,847 : 1,021,178.57 = 281,432.36 : x
  2. Step 2: Convert to fraction form
    680,847/1,021,178.57 = 281,432.36/x
  3. Step 3: Cross multiply
    680,847x = 1,021,178.57 × 281,432.36
  4. Step 4: Simplify right side
    680,847x = 287,392,688,423.47
  5. Step 5: Solve for x
    x = 287,392,688,423.47/680,847
  6. Step 6: Final answer
    x = 422,110.53

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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.