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Finding the Fourth Proportional to 644,920.20, 966,689.10 and 245,406.60

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Solution

The fourth proportional to 644,920.20, 966,689.10 and 245,406.60 is: 367,846.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,920.20 : 966,689.10 = 245,406.60 : x
  2. Step 2: Convert to fraction form
    644,920.20/966,689.10 = 245,406.60/x
  3. Step 3: Cross multiply
    644,920.20x = 966,689.10 × 245,406.60
  4. Step 4: Simplify right side
    644,920.20x = 237,231,885,288.06
  5. Step 5: Solve for x
    x = 237,231,885,288.06/644,920.20
  6. Step 6: Final answer
    x = 367,846.88

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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.