Home / 642,394.05-962,539.82-388,906.24

Finding the Fourth Proportional to 642,394.05, 962,539.82 and 388,906.24

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Solution

The fourth proportional to 642,394.05, 962,539.82 and 388,906.24 is: 582,722.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,394.05 : 962,539.82 = 388,906.24 : x
  2. Step 2: Convert to fraction form
    642,394.05/962,539.82 = 388,906.24/x
  3. Step 3: Cross multiply
    642,394.05x = 962,539.82 × 388,906.24
  4. Step 4: Simplify right side
    642,394.05x = 374,337,737,433.78
  5. Step 5: Solve for x
    x = 374,337,737,433.78/642,394.05
  6. Step 6: Final answer
    x = 582,722.93

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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.