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Finding the Fourth Proportional to 1,392,724.88, 1,922,548.24 and 940,628.24

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Solution

The fourth proportional to 1,392,724.88, 1,922,548.24 and 940,628.24 is: 1,298,464.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,724.88 : 1,922,548.24 = 940,628.24 : x
  2. Step 2: Convert to fraction form
    1,392,724.88/1,922,548.24 = 940,628.24/x
  3. Step 3: Cross multiply
    1,392,724.88x = 1,922,548.24 × 940,628.24
  4. Step 4: Simplify right side
    1,392,724.88x = 1,808,403,167,306.30
  5. Step 5: Solve for x
    x = 1,808,403,167,306.30/1,392,724.88
  6. Step 6: Final answer
    x = 1,298,464.03

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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.