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Finding the Fourth Proportional to 606,871.70, 911,291.70 and 408,073.40

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Solution

The fourth proportional to 606,871.70, 911,291.70 and 408,073.40 is: 612,771.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,871.70 : 911,291.70 = 408,073.40 : x
  2. Step 2: Convert to fraction form
    606,871.70/911,291.70 = 408,073.40/x
  3. Step 3: Cross multiply
    606,871.70x = 911,291.70 × 408,073.40
  4. Step 4: Simplify right side
    606,871.70x = 371,873,902,410.78
  5. Step 5: Solve for x
    x = 371,873,902,410.78/606,871.70
  6. Step 6: Final answer
    x = 612,771.86

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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.