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Finding the Fourth Proportional to 808,086, 1,212,304 and 309,450

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Solution

The fourth proportional to 808,086, 1,212,304 and 309,450 is: 464,242.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,086 : 1,212,304 = 309,450 : x
  2. Step 2: Convert to fraction form
    808,086/1,212,304 = 309,450/x
  3. Step 3: Cross multiply
    808,086x = 1,212,304 × 309,450
  4. Step 4: Simplify right side
    808,086x = 375,147,472,800
  5. Step 5: Solve for x
    x = 375,147,472,800/808,086
  6. Step 6: Final answer
    x = 464,242.01

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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.