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Finding the Fourth Proportional to 679,579.56, 1,019,372.56 and 206,269

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Solution

The fourth proportional to 679,579.56, 1,019,372.56 and 206,269 is: 309,404.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,579.56 : 1,019,372.56 = 206,269 : x
  2. Step 2: Convert to fraction form
    679,579.56/1,019,372.56 = 206,269/x
  3. Step 3: Cross multiply
    679,579.56x = 1,019,372.56 × 206,269
  4. Step 4: Simplify right side
    679,579.56x = 210,264,958,578.64
  5. Step 5: Solve for x
    x = 210,264,958,578.64/679,579.56
  6. Step 6: Final answer
    x = 309,404.48

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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.