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Finding the Fourth Proportional to 768,502.20, 1,152,753.30 and 488,220.60

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Solution

The fourth proportional to 768,502.20, 1,152,753.30 and 488,220.60 is: 732,330.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,502.20 : 1,152,753.30 = 488,220.60 : x
  2. Step 2: Convert to fraction form
    768,502.20/1,152,753.30 = 488,220.60/x
  3. Step 3: Cross multiply
    768,502.20x = 1,152,753.30 × 488,220.60
  4. Step 4: Simplify right side
    768,502.20x = 562,797,907,777.98
  5. Step 5: Solve for x
    x = 562,797,907,777.98/768,502.20
  6. Step 6: Final answer
    x = 732,330.90

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Similar ratio
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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.