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Finding the Fourth Proportional to 644,669.70, 965,675.61 and 377,620.61

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Solution

The fourth proportional to 644,669.70, 965,675.61 and 377,620.61 is: 565,652.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,669.70 : 965,675.61 = 377,620.61 : x
  2. Step 2: Convert to fraction form
    644,669.70/965,675.61 = 377,620.61/x
  3. Step 3: Cross multiply
    644,669.70x = 965,675.61 × 377,620.61
  4. Step 4: Simplify right side
    644,669.70x = 364,659,008,081.94
  5. Step 5: Solve for x
    x = 364,659,008,081.94/644,669.70
  6. Step 6: Final answer
    x = 565,652.47

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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.