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Finding the Fourth Proportional to 644,816.34, 965,963.30 and 531,127.37

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Solution

The fourth proportional to 644,816.34, 965,963.30 and 531,127.37 is: 795,652.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,816.34 : 965,963.30 = 531,127.37 : x
  2. Step 2: Convert to fraction form
    644,816.34/965,963.30 = 531,127.37/x
  3. Step 3: Cross multiply
    644,816.34x = 965,963.30 × 531,127.37
  4. Step 4: Simplify right side
    644,816.34x = 513,049,546,804.79
  5. Step 5: Solve for x
    x = 513,049,546,804.79/644,816.34
  6. Step 6: Final answer
    x = 795,652.21

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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.