Home / 1,188,629.64-1,640,301.84-644,766.48

Finding the Fourth Proportional to 1,188,629.64, 1,640,301.84 and 644,766.48

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Solution

The fourth proportional to 1,188,629.64, 1,640,301.84 and 644,766.48 is: 889,773.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,629.64 : 1,640,301.84 = 644,766.48 : x
  2. Step 2: Convert to fraction form
    1,188,629.64/1,640,301.84 = 644,766.48/x
  3. Step 3: Cross multiply
    1,188,629.64x = 1,640,301.84 × 644,766.48
  4. Step 4: Simplify right side
    1,188,629.64x = 1,057,611,643,514.32
  5. Step 5: Solve for x
    x = 1,057,611,643,514.32/1,188,629.64
  6. Step 6: Final answer
    x = 889,773.91

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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.