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Finding the Fourth Proportional to 644,666.72, 967,279.52 and 245,420.96

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Solution

The fourth proportional to 644,666.72, 967,279.52 and 245,420.96 is: 368,237.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,666.72 : 967,279.52 = 245,420.96 : x
  2. Step 2: Convert to fraction form
    644,666.72/967,279.52 = 245,420.96/x
  3. Step 3: Cross multiply
    644,666.72x = 967,279.52 × 245,420.96
  4. Step 4: Simplify right side
    644,666.72x = 237,390,664,163.89
  5. Step 5: Solve for x
    x = 237,390,664,163.89/644,666.72
  6. Step 6: Final answer
    x = 368,237.82

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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.