Home / 681,774.54-1,022,661.78-208,459.86

Finding the Fourth Proportional to 681,774.54, 1,022,661.78 and 208,459.86

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Solution

The fourth proportional to 681,774.54, 1,022,661.78 and 208,459.86 is: 312,689.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,774.54 : 1,022,661.78 = 208,459.86 : x
  2. Step 2: Convert to fraction form
    681,774.54/1,022,661.78 = 208,459.86/x
  3. Step 3: Cross multiply
    681,774.54x = 1,022,661.78 × 208,459.86
  4. Step 4: Simplify right side
    681,774.54x = 213,183,931,486.15
  5. Step 5: Solve for x
    x = 213,183,931,486.15/681,774.54
  6. Step 6: Final answer
    x = 312,689.78

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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.