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Finding the Fourth Proportional to 408,056.70, 611,487.45 and 365,936.70

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Solution

The fourth proportional to 408,056.70, 611,487.45 and 365,936.70 is: 548,369.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,056.70 : 611,487.45 = 365,936.70 : x
  2. Step 2: Convert to fraction form
    408,056.70/611,487.45 = 365,936.70/x
  3. Step 3: Cross multiply
    408,056.70x = 611,487.45 × 365,936.70
  4. Step 4: Simplify right side
    408,056.70x = 223,765,699,544.42
  5. Step 5: Solve for x
    x = 223,765,699,544.42/408,056.70
  6. Step 6: Final answer
    x = 548,369.13

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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.