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Finding the Fourth Proportional to 701,968,648.29, 968,704,899.29 and 388,696,136.22

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Solution

The fourth proportional to 701,968,648.29, 968,704,899.29 and 388,696,136.22 is: 536,394,114.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    701,968,648.29 : 968,704,899.29 = 388,696,136.22 : x
  2. Step 2: Convert to fraction form
    701,968,648.29/968,704,899.29 = 388,696,136.22/x
  3. Step 3: Cross multiply
    701,968,648.29x = 968,704,899.29 × 388,696,136.22
  4. Step 4: Simplify right side
    701,968,648.29x = 376,531,851,489,463,744
  5. Step 5: Solve for x
    x = 376,531,851,489,463,744/701,968,648.29
  6. Step 6: Final answer
    x = 536,394,114.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.