Home / 1,149,435.40-1,586,270.07-640,137.78

Finding the Fourth Proportional to 1,149,435.40, 1,586,270.07 and 640,137.78

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Solution

The fourth proportional to 1,149,435.40, 1,586,270.07 and 640,137.78 is: 883,417.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149,435.40 : 1,586,270.07 = 640,137.78 : x
  2. Step 2: Convert to fraction form
    1,149,435.40/1,586,270.07 = 640,137.78/x
  3. Step 3: Cross multiply
    1,149,435.40x = 1,586,270.07 × 640,137.78
  4. Step 4: Simplify right side
    1,149,435.40x = 1,015,431,397,049.32
  5. Step 5: Solve for x
    x = 1,015,431,397,049.32/1,149,435.40
  6. Step 6: Final answer
    x = 883,417.54

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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.