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Finding the Fourth Proportional to 606,130.40, 911,163.90 and 429,858.20

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Solution

The fourth proportional to 606,130.40, 911,163.90 and 429,858.20 is: 646,183.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,130.40 : 911,163.90 = 429,858.20 : x
  2. Step 2: Convert to fraction form
    606,130.40/911,163.90 = 429,858.20/x
  3. Step 3: Cross multiply
    606,130.40x = 911,163.90 × 429,858.20
  4. Step 4: Simplify right side
    606,130.40x = 391,671,273,958.98
  5. Step 5: Solve for x
    x = 391,671,273,958.98/606,130.40
  6. Step 6: Final answer
    x = 646,183.19

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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.