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Finding the Fourth Proportional to 436,906.60, 655,359.90 and 259,322.20

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Solution

The fourth proportional to 436,906.60, 655,359.90 and 259,322.20 is: 388,983.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,906.60 : 655,359.90 = 259,322.20 : x
  2. Step 2: Convert to fraction form
    436,906.60/655,359.90 = 259,322.20/x
  3. Step 3: Cross multiply
    436,906.60x = 655,359.90 × 259,322.20
  4. Step 4: Simplify right side
    436,906.60x = 169,949,371,059.78
  5. Step 5: Solve for x
    x = 169,949,371,059.78/436,906.60
  6. Step 6: Final answer
    x = 388,983.30

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Similar ratio
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1.5x scale

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.