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Finding the Fourth Proportional to 642,557.50, 963,520.36 and 263,375.44

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Solution

The fourth proportional to 642,557.50, 963,520.36 and 263,375.44 is: 394,933.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,557.50 : 963,520.36 = 263,375.44 : x
  2. Step 2: Convert to fraction form
    642,557.50/963,520.36 = 263,375.44/x
  3. Step 3: Cross multiply
    642,557.50x = 963,520.36 × 263,375.44
  4. Step 4: Simplify right side
    642,557.50x = 253,767,598,763.96
  5. Step 5: Solve for x
    x = 253,767,598,763.96/642,557.50
  6. Step 6: Final answer
    x = 394,933.68

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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.