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Finding the Fourth Proportional to 393,011.20, 588,860.70 and 336,586.60

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Solution

The fourth proportional to 393,011.20, 588,860.70 and 336,586.60 is: 504,318.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,011.20 : 588,860.70 = 336,586.60 : x
  2. Step 2: Convert to fraction form
    393,011.20/588,860.70 = 336,586.60/x
  3. Step 3: Cross multiply
    393,011.20x = 588,860.70 × 336,586.60
  4. Step 4: Simplify right side
    393,011.20x = 198,202,620,886.62
  5. Step 5: Solve for x
    x = 198,202,620,886.62/393,011.20
  6. Step 6: Final answer
    x = 504,318.00

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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.