Home / 1,288,786.26-1,778,475.57-715,863.06

Finding the Fourth Proportional to 1,288,786.26, 1,778,475.57 and 715,863.06

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Solution

The fourth proportional to 1,288,786.26, 1,778,475.57 and 715,863.06 is: 987,863.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,786.26 : 1,778,475.57 = 715,863.06 : x
  2. Step 2: Convert to fraction form
    1,288,786.26/1,778,475.57 = 715,863.06/x
  3. Step 3: Cross multiply
    1,288,786.26x = 1,778,475.57 × 715,863.06
  4. Step 4: Simplify right side
    1,288,786.26x = 1,273,144,963,675.44
  5. Step 5: Solve for x
    x = 1,273,144,963,675.44/1,288,786.26
  6. Step 6: Final answer
    x = 987,863.55

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.