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Finding the Fourth Proportional to 512,903.60, 769,355.40 and 488,409.20

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Solution

The fourth proportional to 512,903.60, 769,355.40 and 488,409.20 is: 732,613.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,903.60 : 769,355.40 = 488,409.20 : x
  2. Step 2: Convert to fraction form
    512,903.60/769,355.40 = 488,409.20/x
  3. Step 3: Cross multiply
    512,903.60x = 769,355.40 × 488,409.20
  4. Step 4: Simplify right side
    512,903.60x = 375,760,255,429.68
  5. Step 5: Solve for x
    x = 375,760,255,429.68/512,903.60
  6. Step 6: Final answer
    x = 732,613.80

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Similar ratio
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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.