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Finding the Fourth Proportional to 470,512.80, 705,769.20 and 321,213.60

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Solution

The fourth proportional to 470,512.80, 705,769.20 and 321,213.60 is: 481,820.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,512.80 : 705,769.20 = 321,213.60 : x
  2. Step 2: Convert to fraction form
    470,512.80/705,769.20 = 321,213.60/x
  3. Step 3: Cross multiply
    470,512.80x = 705,769.20 × 321,213.60
  4. Step 4: Simplify right side
    470,512.80x = 226,702,665,501.12
  5. Step 5: Solve for x
    x = 226,702,665,501.12/470,512.80
  6. Step 6: Final answer
    x = 481,820.40

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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.