Home / 1,149,371.92-1,586,019.72-640,121.68

Finding the Fourth Proportional to 1,149,371.92, 1,586,019.72 and 640,121.68

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Solution

The fourth proportional to 1,149,371.92, 1,586,019.72 and 640,121.68 is: 883,304.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149,371.92 : 1,586,019.72 = 640,121.68 : x
  2. Step 2: Convert to fraction form
    1,149,371.92/1,586,019.72 = 640,121.68/x
  3. Step 3: Cross multiply
    1,149,371.92x = 1,586,019.72 × 640,121.68
  4. Step 4: Simplify right side
    1,149,371.92x = 1,015,245,607,679.53
  5. Step 5: Solve for x
    x = 1,015,245,607,679.53/1,149,371.92
  6. Step 6: Final answer
    x = 883,304.69

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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.