Home / 1,188,799.20-1,640,510.88-723,478.56

Finding the Fourth Proportional to 1,188,799.20, 1,640,510.88 and 723,478.56

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Solution

The fourth proportional to 1,188,799.20, 1,640,510.88 and 723,478.56 is: 998,380.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,799.20 : 1,640,510.88 = 723,478.56 : x
  2. Step 2: Convert to fraction form
    1,188,799.20/1,640,510.88 = 723,478.56/x
  3. Step 3: Cross multiply
    1,188,799.20x = 1,640,510.88 × 723,478.56
  4. Step 4: Simplify right side
    1,188,799.20x = 1,186,874,449,126.73
  5. Step 5: Solve for x
    x = 1,186,874,449,126.73/1,188,799.20
  6. Step 6: Final answer
    x = 998,380.93

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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.