Home / 1,288,851.12-1,778,427-715,896.24

Finding the Fourth Proportional to 1,288,851.12, 1,778,427 and 715,896.24

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Solution

The fourth proportional to 1,288,851.12, 1,778,427 and 715,896.24 is: 987,832.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,851.12 : 1,778,427 = 715,896.24 : x
  2. Step 2: Convert to fraction form
    1,288,851.12/1,778,427 = 715,896.24/x
  3. Step 3: Cross multiply
    1,288,851.12x = 1,778,427 × 715,896.24
  4. Step 4: Simplify right side
    1,288,851.12x = 1,273,169,202,414.48
  5. Step 5: Solve for x
    x = 1,273,169,202,414.48/1,288,851.12
  6. Step 6: Final answer
    x = 987,832.64

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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.