Home / 609,091.28-913,697.78-209,679.20

Finding the Fourth Proportional to 609,091.28, 913,697.78 and 209,679.20

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Solution

The fourth proportional to 609,091.28, 913,697.78 and 209,679.20 is: 314,539.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,091.28 : 913,697.78 = 209,679.20 : x
  2. Step 2: Convert to fraction form
    609,091.28/913,697.78 = 209,679.20/x
  3. Step 3: Cross multiply
    609,091.28x = 913,697.78 × 209,679.20
  4. Step 4: Simplify right side
    609,091.28x = 191,583,419,552.18
  5. Step 5: Solve for x
    x = 191,583,419,552.18/609,091.28
  6. Step 6: Final answer
    x = 314,539.75

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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.