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Finding the Fourth Proportional to 606,163.90, 911,214.15 and 429,891.70

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Solution

The fourth proportional to 606,163.90, 911,214.15 and 429,891.70 is: 646,233.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,163.90 : 911,214.15 = 429,891.70 : x
  2. Step 2: Convert to fraction form
    606,163.90/911,214.15 = 429,891.70/x
  3. Step 3: Cross multiply
    606,163.90x = 911,214.15 × 429,891.70
  4. Step 4: Simplify right side
    606,163.90x = 391,723,400,007.56
  5. Step 5: Solve for x
    x = 391,723,400,007.56/606,163.90
  6. Step 6: Final answer
    x = 646,233.47

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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.