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Finding the Fourth Proportional to 408,818.40, 612,644.40 and 301,363.80

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Solution

The fourth proportional to 408,818.40, 612,644.40 and 301,363.80 is: 451,615.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,818.40 : 612,644.40 = 301,363.80 : x
  2. Step 2: Convert to fraction form
    408,818.40/612,644.40 = 301,363.80/x
  3. Step 3: Cross multiply
    408,818.40x = 612,644.40 × 301,363.80
  4. Step 4: Simplify right side
    408,818.40x = 184,628,844,432.72
  5. Step 5: Solve for x
    x = 184,628,844,432.72/408,818.40
  6. Step 6: Final answer
    x = 451,615.79

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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.