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Finding the Fourth Proportional to 512,841,659.40, 769,262,489.10 and 221,505,703.20

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Solution

The fourth proportional to 512,841,659.40, 769,262,489.10 and 221,505,703.20 is: 332,258,554.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,841,659.40 : 769,262,489.10 = 221,505,703.20 : x
  2. Step 2: Convert to fraction form
    512,841,659.40/769,262,489.10 = 221,505,703.20/x
  3. Step 3: Cross multiply
    512,841,659.40x = 769,262,489.10 × 221,505,703.20
  4. Step 4: Simplify right side
    512,841,659.40x = 170,396,028,593,477,824
  5. Step 5: Solve for x
    x = 170,396,028,593,477,824/512,841,659.40
  6. Step 6: Final answer
    x = 332,258,554.80

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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.