Home / 1,179,974.54-1,628,361.87-643,430.54

Finding the Fourth Proportional to 1,179,974.54, 1,628,361.87 and 643,430.54

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Solution

The fourth proportional to 1,179,974.54, 1,628,361.87 and 643,430.54 is: 887,932.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179,974.54 : 1,628,361.87 = 643,430.54 : x
  2. Step 2: Convert to fraction form
    1,179,974.54/1,628,361.87 = 643,430.54/x
  3. Step 3: Cross multiply
    1,179,974.54x = 1,628,361.87 × 643,430.54
  4. Step 4: Simplify right side
    1,179,974.54x = 1,047,737,757,329.51
  5. Step 5: Solve for x
    x = 1,047,737,757,329.51/1,179,974.54
  6. Step 6: Final answer
    x = 887,932.51

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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.