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Finding the Fourth Proportional to 620,469,260.88, 930,695,919.30 and 206,136,599.64

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Solution

The fourth proportional to 620,469,260.88, 930,695,919.30 and 206,136,599.64 is: 309,202,250.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,469,260.88 : 930,695,919.30 = 206,136,599.64 : x
  2. Step 2: Convert to fraction form
    620,469,260.88/930,695,919.30 = 206,136,599.64/x
  3. Step 3: Cross multiply
    620,469,260.88x = 930,695,919.30 × 206,136,599.64
  4. Step 4: Simplify right side
    620,469,260.88x = 191,850,492,103,325,824
  5. Step 5: Solve for x
    x = 191,850,492,103,325,824/620,469,260.88
  6. Step 6: Final answer
    x = 309,202,250.94

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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.