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Finding the Fourth Proportional to 426,596.97, 638,013.15 and 379,542.27

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Solution

The fourth proportional to 426,596.97, 638,013.15 and 379,542.27 is: 567,638.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,596.97 : 638,013.15 = 379,542.27 : x
  2. Step 2: Convert to fraction form
    426,596.97/638,013.15 = 379,542.27/x
  3. Step 3: Cross multiply
    426,596.97x = 638,013.15 × 379,542.27
  4. Step 4: Simplify right side
    426,596.97x = 242,152,959,240.85
  5. Step 5: Solve for x
    x = 242,152,959,240.85/426,596.97
  6. Step 6: Final answer
    x = 567,638.72

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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.