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Finding the Fourth Proportional to 967,745.80, 1,451,910.30 and 687,809.80

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Solution

The fourth proportional to 967,745.80, 1,451,910.30 and 687,809.80 is: 1,031,921.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    967,745.80 : 1,451,910.30 = 687,809.80 : x
  2. Step 2: Convert to fraction form
    967,745.80/1,451,910.30 = 687,809.80/x
  3. Step 3: Cross multiply
    967,745.80x = 1,451,910.30 × 687,809.80
  4. Step 4: Simplify right side
    967,745.80x = 998,638,133,060.94
  5. Step 5: Solve for x
    x = 998,638,133,060.94/967,745.80
  6. Step 6: Final answer
    x = 1,031,921.95

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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.