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Finding the Fourth Proportional to 1,392,675.88, 1,922,480.58 and 940,579.24

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Solution

The fourth proportional to 1,392,675.88, 1,922,480.58 and 940,579.24 is: 1,298,396.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,675.88 : 1,922,480.58 = 940,579.24 : x
  2. Step 2: Convert to fraction form
    1,392,675.88/1,922,480.58 = 940,579.24/x
  3. Step 3: Cross multiply
    1,392,675.88x = 1,922,480.58 × 940,579.24
  4. Step 4: Simplify right side
    1,392,675.88x = 1,808,245,322,851.16
  5. Step 5: Solve for x
    x = 1,808,245,322,851.16/1,392,675.88
  6. Step 6: Final answer
    x = 1,298,396.38

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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.