Home / 620,341.42-929,921.19-199,321.78

Finding the Fourth Proportional to 620,341.42, 929,921.19 and 199,321.78

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Solution

The fourth proportional to 620,341.42, 929,921.19 and 199,321.78 is: 298,792.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,341.42 : 929,921.19 = 199,321.78 : x
  2. Step 2: Convert to fraction form
    620,341.42/929,921.19 = 199,321.78/x
  3. Step 3: Cross multiply
    620,341.42x = 929,921.19 × 199,321.78
  4. Step 4: Simplify right side
    620,341.42x = 185,353,546,850.52
  5. Step 5: Solve for x
    x = 185,353,546,850.52/620,341.42
  6. Step 6: Final answer
    x = 298,792.80

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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.