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Finding the Fourth Proportional to 644,670.21, 965,676.39 and 377,621.10

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Solution

The fourth proportional to 644,670.21, 965,676.39 and 377,621.10 is: 565,653.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,670.21 : 965,676.39 = 377,621.10 : x
  2. Step 2: Convert to fraction form
    644,670.21/965,676.39 = 377,621.10/x
  3. Step 3: Cross multiply
    644,670.21x = 965,676.39 × 377,621.10
  4. Step 4: Simplify right side
    644,670.21x = 364,659,780,635.83
  5. Step 5: Solve for x
    x = 364,659,780,635.83/644,670.21
  6. Step 6: Final answer
    x = 565,653.22

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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.