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Finding the Fourth Proportional to 664,984.80, 996,829.20 and 380,383.20

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Solution

The fourth proportional to 664,984.80, 996,829.20 and 380,383.20 is: 570,204.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,984.80 : 996,829.20 = 380,383.20 : x
  2. Step 2: Convert to fraction form
    664,984.80/996,829.20 = 380,383.20/x
  3. Step 3: Cross multiply
    664,984.80x = 996,829.20 × 380,383.20
  4. Step 4: Simplify right side
    664,984.80x = 379,177,080,949.44
  5. Step 5: Solve for x
    x = 379,177,080,949.44/664,984.80
  6. Step 6: Final answer
    x = 570,204.13

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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.