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Finding the Fourth Proportional to 611,872.08, 844,377.90 and 339,940.50

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Solution

The fourth proportional to 611,872.08, 844,377.90 and 339,940.50 is: 469,114.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,872.08 : 844,377.90 = 339,940.50 : x
  2. Step 2: Convert to fraction form
    611,872.08/844,377.90 = 339,940.50/x
  3. Step 3: Cross multiply
    611,872.08x = 844,377.90 × 339,940.50
  4. Step 4: Simplify right side
    611,872.08x = 287,038,245,514.95
  5. Step 5: Solve for x
    x = 287,038,245,514.95/611,872.08
  6. Step 6: Final answer
    x = 469,114.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.