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Finding the Fourth Proportional to 608,218.54, 911,763.30 and 288,520.38

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Solution

The fourth proportional to 608,218.54, 911,763.30 and 288,520.38 is: 432,512.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,218.54 : 911,763.30 = 288,520.38 : x
  2. Step 2: Convert to fraction form
    608,218.54/911,763.30 = 288,520.38/x
  3. Step 3: Cross multiply
    608,218.54x = 911,763.30 × 288,520.38
  4. Step 4: Simplify right side
    608,218.54x = 263,062,293,786.05
  5. Step 5: Solve for x
    x = 263,062,293,786.05/608,218.54
  6. Step 6: Final answer
    x = 432,512.78

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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.