Home / 722,339,912.28-996,834,180.78-392,315,051.28

Finding the Fourth Proportional to 722,339,912.28, 996,834,180.78 and 392,315,051.28

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Solution

The fourth proportional to 722,339,912.28, 996,834,180.78 and 392,315,051.28 is: 541,397,541.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,339,912.28 : 996,834,180.78 = 392,315,051.28 : x
  2. Step 2: Convert to fraction form
    722,339,912.28/996,834,180.78 = 392,315,051.28/x
  3. Step 3: Cross multiply
    722,339,912.28x = 996,834,180.78 × 392,315,051.28
  4. Step 4: Simplify right side
    722,339,912.28x = 391,073,052,750,362,432
  5. Step 5: Solve for x
    x = 391,073,052,750,362,432/722,339,912.28
  6. Step 6: Final answer
    x = 541,397,541.66

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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.