Home / 679,719.11-1,019,512.41-206,408.57

Finding the Fourth Proportional to 679,719.11, 1,019,512.41 and 206,408.57

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Solution

The fourth proportional to 679,719.11, 1,019,512.41 and 206,408.57 is: 309,592.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,719.11 : 1,019,512.41 = 206,408.57 : x
  2. Step 2: Convert to fraction form
    679,719.11/1,019,512.41 = 206,408.57/x
  3. Step 3: Cross multiply
    679,719.11x = 1,019,512.41 × 206,408.57
  4. Step 4: Simplify right side
    679,719.11x = 210,436,098,645.35
  5. Step 5: Solve for x
    x = 210,436,098,645.35/679,719.11
  6. Step 6: Final answer
    x = 309,592.74

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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.