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Finding the Fourth Proportional to 644,673.60, 966,676.67 and 289,381.68

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Solution

The fourth proportional to 644,673.60, 966,676.67 and 289,381.68 is: 433,922.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,673.60 : 966,676.67 = 289,381.68 : x
  2. Step 2: Convert to fraction form
    644,673.60/966,676.67 = 289,381.68/x
  3. Step 3: Cross multiply
    644,673.60x = 966,676.67 × 289,381.68
  4. Step 4: Simplify right side
    644,673.60x = 279,738,518,781.41
  5. Step 5: Solve for x
    x = 279,738,518,781.41/644,673.60
  6. Step 6: Final answer
    x = 433,922.71

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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.