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Finding the Fourth Proportional to 663,043.78, 994,859.70 and 347,425.66

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Solution

The fourth proportional to 663,043.78, 994,859.70 and 347,425.66 is: 521,292.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,043.78 : 994,859.70 = 347,425.66 : x
  2. Step 2: Convert to fraction form
    663,043.78/994,859.70 = 347,425.66/x
  3. Step 3: Cross multiply
    663,043.78x = 994,859.70 × 347,425.66
  4. Step 4: Simplify right side
    663,043.78x = 345,639,787,879.90
  5. Step 5: Solve for x
    x = 345,639,787,879.90/663,043.78
  6. Step 6: Final answer
    x = 521,292.56

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1.5x scale

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.