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Finding the Fourth Proportional to 644,364.46, 889,170.83 and 372,449.98

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Solution

The fourth proportional to 644,364.46, 889,170.83 and 372,449.98 is: 513,950.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,364.46 : 889,170.83 = 372,449.98 : x
  2. Step 2: Convert to fraction form
    644,364.46/889,170.83 = 372,449.98/x
  3. Step 3: Cross multiply
    644,364.46x = 889,170.83 × 372,449.98
  4. Step 4: Simplify right side
    644,364.46x = 331,171,657,850.08
  5. Step 5: Solve for x
    x = 331,171,657,850.08/644,364.46
  6. Step 6: Final answer
    x = 513,950.84

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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.