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Finding the Fourth Proportional to 619,013.68, 928,520.82 and 408,602.44

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Solution

The fourth proportional to 619,013.68, 928,520.82 and 408,602.44 is: 612,903.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,013.68 : 928,520.82 = 408,602.44 : x
  2. Step 2: Convert to fraction form
    619,013.68/928,520.82 = 408,602.44/x
  3. Step 3: Cross multiply
    619,013.68x = 928,520.82 × 408,602.44
  4. Step 4: Simplify right side
    619,013.68x = 379,395,872,642.80
  5. Step 5: Solve for x
    x = 379,395,872,642.80/619,013.68
  6. Step 6: Final answer
    x = 612,903.86

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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.