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Finding the Fourth Proportional to 571,906,706.25, 789,187,941.63 and 320,962,632.60

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Solution

The fourth proportional to 571,906,706.25, 789,187,941.63 and 320,962,632.60 is: 442,904,125.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,906,706.25 : 789,187,941.63 = 320,962,632.60 : x
  2. Step 2: Convert to fraction form
    571,906,706.25/789,187,941.63 = 320,962,632.60/x
  3. Step 3: Cross multiply
    571,906,706.25x = 789,187,941.63 × 320,962,632.60
  4. Step 4: Simplify right side
    571,906,706.25x = 253,299,839,361,739,968
  5. Step 5: Solve for x
    x = 253,299,839,361,739,968/571,906,706.25
  6. Step 6: Final answer
    x = 442,904,125.08

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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.