Home / 986,825.53-1,362,074.38-643,517.56

Finding the Fourth Proportional to 986,825.53, 1,362,074.38 and 643,517.56

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Solution

The fourth proportional to 986,825.53, 1,362,074.38 and 643,517.56 is: 888,220.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,825.53 : 1,362,074.38 = 643,517.56 : x
  2. Step 2: Convert to fraction form
    986,825.53/1,362,074.38 = 643,517.56/x
  3. Step 3: Cross multiply
    986,825.53x = 1,362,074.38 × 643,517.56
  4. Step 4: Simplify right side
    986,825.53x = 876,518,785,269.70
  5. Step 5: Solve for x
    x = 876,518,785,269.70/986,825.53
  6. Step 6: Final answer
    x = 888,220.62

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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.