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Finding the Fourth Proportional to 1,392,725.88, 1,922,549.62 and 940,629.24

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Solution

The fourth proportional to 1,392,725.88, 1,922,549.62 and 940,629.24 is: 1,298,465.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,725.88 : 1,922,549.62 = 940,629.24 : x
  2. Step 2: Convert to fraction form
    1,392,725.88/1,922,549.62 = 940,629.24/x
  3. Step 3: Cross multiply
    1,392,725.88x = 1,922,549.62 × 940,629.24
  4. Step 4: Simplify right side
    1,392,725.88x = 1,808,406,387,922.89
  5. Step 5: Solve for x
    x = 1,808,406,387,922.89/1,392,725.88
  6. Step 6: Final answer
    x = 1,298,465.42

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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.