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Finding the Fourth Proportional to 509,336,220.80, 764,004,331.20 and 509,336,220.80

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Solution

The fourth proportional to 509,336,220.80, 764,004,331.20 and 509,336,220.80 is: 764,004,331.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,336,220.80 : 764,004,331.20 = 509,336,220.80 : x
  2. Step 2: Convert to fraction form
    509,336,220.80/764,004,331.20 = 509,336,220.80/x
  3. Step 3: Cross multiply
    509,336,220.80x = 764,004,331.20 × 509,336,220.80
  4. Step 4: Simplify right side
    509,336,220.80x = 389,135,078,728,239,552
  5. Step 5: Solve for x
    x = 389,135,078,728,239,552/509,336,220.80
  6. Step 6: Final answer
    x = 764,004,331.20

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Double scale
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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.