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Finding the Fourth Proportional to 666,865.43, 999,492.56 and 324,796.15

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Solution

The fourth proportional to 666,865.43, 999,492.56 and 324,796.15 is: 486,801.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,865.43 : 999,492.56 = 324,796.15 : x
  2. Step 2: Convert to fraction form
    666,865.43/999,492.56 = 324,796.15/x
  3. Step 3: Cross multiply
    666,865.43x = 999,492.56 × 324,796.15
  4. Step 4: Simplify right side
    666,865.43x = 324,631,335,441.64
  5. Step 5: Solve for x
    x = 324,631,335,441.64/666,865.43
  6. Step 6: Final answer
    x = 486,801.87

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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.