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Finding the Fourth Proportional to 922,408.20, 1,383,612.30 and 886,978.80

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Solution

The fourth proportional to 922,408.20, 1,383,612.30 and 886,978.80 is: 1,330,468.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,408.20 : 1,383,612.30 = 886,978.80 : x
  2. Step 2: Convert to fraction form
    922,408.20/1,383,612.30 = 886,978.80/x
  3. Step 3: Cross multiply
    922,408.20x = 1,383,612.30 × 886,978.80
  4. Step 4: Simplify right side
    922,408.20x = 1,227,234,777,519.24
  5. Step 5: Solve for x
    x = 1,227,234,777,519.24/922,408.20
  6. Step 6: Final answer
    x = 1,330,468.20

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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.