Home / 825,512.28-1,137,664.36-643,936.56

Finding the Fourth Proportional to 825,512.28, 1,137,664.36 and 643,936.56

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Solution

The fourth proportional to 825,512.28, 1,137,664.36 and 643,936.56 is: 887,429.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,512.28 : 1,137,664.36 = 643,936.56 : x
  2. Step 2: Convert to fraction form
    825,512.28/1,137,664.36 = 643,936.56/x
  3. Step 3: Cross multiply
    825,512.28x = 1,137,664.36 × 643,936.56
  4. Step 4: Simplify right side
    825,512.28x = 732,583,674,413.00
  5. Step 5: Solve for x
    x = 732,583,674,413.00/825,512.28
  6. Step 6: Final answer
    x = 887,429.17

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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.