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Finding the Fourth Proportional to 644,672.47, 965,679.75 and 377,623.36

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Solution

The fourth proportional to 644,672.47, 965,679.75 and 377,623.36 is: 565,656.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,672.47 : 965,679.75 = 377,623.36 : x
  2. Step 2: Convert to fraction form
    644,672.47/965,679.75 = 377,623.36/x
  3. Step 3: Cross multiply
    644,672.47x = 965,679.75 × 377,623.36
  4. Step 4: Simplify right side
    644,672.47x = 364,663,231,878.96
  5. Step 5: Solve for x
    x = 364,663,231,878.96/644,672.47
  6. Step 6: Final answer
    x = 565,656.59

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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.