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Finding the Fourth Proportional to 644,047.60, 965,245.20 and 359,737.60

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Solution

The fourth proportional to 644,047.60, 965,245.20 and 359,737.60 is: 539,144.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,047.60 : 965,245.20 = 359,737.60 : x
  2. Step 2: Convert to fraction form
    644,047.60/965,245.20 = 359,737.60/x
  3. Step 3: Cross multiply
    644,047.60x = 965,245.20 × 359,737.60
  4. Step 4: Simplify right side
    644,047.60x = 347,234,991,659.52
  5. Step 5: Solve for x
    x = 347,234,991,659.52/644,047.60
  6. Step 6: Final answer
    x = 539,144.92

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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.