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Finding the Fourth Proportional to 655,691,999.75, 983,430,267.49 and 235,426,371.78

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Solution

The fourth proportional to 655,691,999.75, 983,430,267.49 and 235,426,371.78 is: 353,100,876.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,691,999.75 : 983,430,267.49 = 235,426,371.78 : x
  2. Step 2: Convert to fraction form
    655,691,999.75/983,430,267.49 = 235,426,371.78/x
  3. Step 3: Cross multiply
    655,691,999.75x = 983,430,267.49 × 235,426,371.78
  4. Step 4: Simplify right side
    655,691,999.75x = 231,525,419,777,787,744
  5. Step 5: Solve for x
    x = 231,525,419,777,787,744/655,691,999.75
  6. Step 6: Final answer
    x = 353,100,876.43

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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.