Home / 679,719.12-1,019,512.40-206,408.58

Finding the Fourth Proportional to 679,719.12, 1,019,512.40 and 206,408.58

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Solution

The fourth proportional to 679,719.12, 1,019,512.40 and 206,408.58 is: 309,592.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,719.12 : 1,019,512.40 = 206,408.58 : x
  2. Step 2: Convert to fraction form
    679,719.12/1,019,512.40 = 206,408.58/x
  3. Step 3: Cross multiply
    679,719.12x = 1,019,512.40 × 206,408.58
  4. Step 4: Simplify right side
    679,719.12x = 210,436,106,776.39
  5. Step 5: Solve for x
    x = 210,436,106,776.39/679,719.12
  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.