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Finding the Fourth Proportional to 888,684,687.82, 1,227,209,233.04 and 665,278,515.33

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Solution

The fourth proportional to 888,684,687.82, 1,227,209,233.04 and 665,278,515.33 is: 918,701,478.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,684,687.82 : 1,227,209,233.04 = 665,278,515.33 : x
  2. Step 2: Convert to fraction form
    888,684,687.82/1,227,209,233.04 = 665,278,515.33/x
  3. Step 3: Cross multiply
    888,684,687.82x = 1,227,209,233.04 × 665,278,515.33
  4. Step 4: Simplify right side
    888,684,687.82x = 816,435,936,556,119,168
  5. Step 5: Solve for x
    x = 816,435,936,556,119,168/888,684,687.82
  6. Step 6: Final answer
    x = 918,701,478.43

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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.