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Finding the Fourth Proportional to 647,424.94, 969,255.22 and 376,728.08

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Solution

The fourth proportional to 647,424.94, 969,255.22 and 376,728.08 is: 563,996.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,424.94 : 969,255.22 = 376,728.08 : x
  2. Step 2: Convert to fraction form
    647,424.94/969,255.22 = 376,728.08/x
  3. Step 3: Cross multiply
    647,424.94x = 969,255.22 × 376,728.08
  4. Step 4: Simplify right side
    647,424.94x = 365,145,658,060.58
  5. Step 5: Solve for x
    x = 365,145,658,060.58/647,424.94
  6. Step 6: Final answer
    x = 563,996.90

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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.