Home / 680,845.50-1,021,176.32-281,430.86

Finding the Fourth Proportional to 680,845.50, 1,021,176.32 and 281,430.86

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Solution

The fourth proportional to 680,845.50, 1,021,176.32 and 281,430.86 is: 422,108.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,845.50 : 1,021,176.32 = 281,430.86 : x
  2. Step 2: Convert to fraction form
    680,845.50/1,021,176.32 = 281,430.86/x
  3. Step 3: Cross multiply
    680,845.50x = 1,021,176.32 × 281,430.86
  4. Step 4: Simplify right side
    680,845.50x = 287,390,523,436.20
  5. Step 5: Solve for x
    x = 287,390,523,436.20/680,845.50
  6. Step 6: Final answer
    x = 422,108.28

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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.