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Finding the Fourth Proportional to 648,265.20, 971,620.20 and 332,559.60

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Solution

The fourth proportional to 648,265.20, 971,620.20 and 332,559.60 is: 498,440.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,265.20 : 971,620.20 = 332,559.60 : x
  2. Step 2: Convert to fraction form
    648,265.20/971,620.20 = 332,559.60/x
  3. Step 3: Cross multiply
    648,265.20x = 971,620.20 × 332,559.60
  4. Step 4: Simplify right side
    648,265.20x = 323,121,625,063.92
  5. Step 5: Solve for x
    x = 323,121,625,063.92/648,265.20
  6. Step 6: Final answer
    x = 498,440.49

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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.