Home / 939,661.88-1,296,734.31-509,942.12

Finding the Fourth Proportional to 939,661.88, 1,296,734.31 and 509,942.12

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Solution

The fourth proportional to 939,661.88, 1,296,734.31 and 509,942.12 is: 703,720.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,661.88 : 1,296,734.31 = 509,942.12 : x
  2. Step 2: Convert to fraction form
    939,661.88/1,296,734.31 = 509,942.12/x
  3. Step 3: Cross multiply
    939,661.88x = 1,296,734.31 × 509,942.12
  4. Step 4: Simplify right side
    939,661.88x = 661,259,436,634.47
  5. Step 5: Solve for x
    x = 661,259,436,634.47/939,661.88
  6. Step 6: Final answer
    x = 703,720.62

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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.