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Finding the Fourth Proportional to 541,556.22, 813,121.65 and 399,838.62

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Solution

The fourth proportional to 541,556.22, 813,121.65 and 399,838.62 is: 600,339.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,556.22 : 813,121.65 = 399,838.62 : x
  2. Step 2: Convert to fraction form
    541,556.22/813,121.65 = 399,838.62/x
  3. Step 3: Cross multiply
    541,556.22x = 813,121.65 × 399,838.62
  4. Step 4: Simplify right side
    541,556.22x = 325,117,438,428.12
  5. Step 5: Solve for x
    x = 325,117,438,428.12/541,556.22
  6. Step 6: Final answer
    x = 600,339.22

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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.