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Finding the Fourth Proportional to 644,676.38, 967,131.31 and 212,416.93

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Solution

The fourth proportional to 644,676.38, 967,131.31 and 212,416.93 is: 318,663.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,676.38 : 967,131.31 = 212,416.93 : x
  2. Step 2: Convert to fraction form
    644,676.38/967,131.31 = 212,416.93/x
  3. Step 3: Cross multiply
    644,676.38x = 967,131.31 × 212,416.93
  4. Step 4: Simplify right side
    644,676.38x = 205,435,063,957.10
  5. Step 5: Solve for x
    x = 205,435,063,957.10/644,676.38
  6. Step 6: Final answer
    x = 318,663.86

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1.5x scale

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.