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Finding the Fourth Proportional to 644,048.60, 965,246.70 and 359,738.60

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Solution

The fourth proportional to 644,048.60, 965,246.70 and 359,738.60 is: 539,146.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,048.60 : 965,246.70 = 359,738.60 : x
  2. Step 2: Convert to fraction form
    644,048.60/965,246.70 = 359,738.60/x
  3. Step 3: Cross multiply
    644,048.60x = 965,246.70 × 359,738.60
  4. Step 4: Simplify right side
    644,048.60x = 347,236,496,512.62
  5. Step 5: Solve for x
    x = 347,236,496,512.62/644,048.60
  6. Step 6: Final answer
    x = 539,146.42

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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.