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Finding the Fourth Proportional to 808,800.80, 1,213,687.20 and 335,436.80

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Solution

The fourth proportional to 808,800.80, 1,213,687.20 and 335,436.80 is: 503,356.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,800.80 : 1,213,687.20 = 335,436.80 : x
  2. Step 2: Convert to fraction form
    808,800.80/1,213,687.20 = 335,436.80/x
  3. Step 3: Cross multiply
    808,800.80x = 1,213,687.20 × 335,436.80
  4. Step 4: Simplify right side
    808,800.80x = 407,115,350,568.96
  5. Step 5: Solve for x
    x = 407,115,350,568.96/808,800.80
  6. Step 6: Final answer
    x = 503,356.76

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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.