Home / 1,275,012.09-1,759,121.82-723,639.15

Finding the Fourth Proportional to 1,275,012.09, 1,759,121.82 and 723,639.15

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Solution

The fourth proportional to 1,275,012.09, 1,759,121.82 and 723,639.15 is: 998,397.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,012.09 : 1,759,121.82 = 723,639.15 : x
  2. Step 2: Convert to fraction form
    1,275,012.09/1,759,121.82 = 723,639.15/x
  3. Step 3: Cross multiply
    1,275,012.09x = 1,759,121.82 × 723,639.15
  4. Step 4: Simplify right side
    1,275,012.09x = 1,272,969,418,571.25
  5. Step 5: Solve for x
    x = 1,272,969,418,571.25/1,275,012.09
  6. Step 6: Final answer
    x = 998,397.92

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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.