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Finding the Fourth Proportional to 426,067.60, 639,101.40 and 268,992.40

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Solution

The fourth proportional to 426,067.60, 639,101.40 and 268,992.40 is: 403,488.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,067.60 : 639,101.40 = 268,992.40 : x
  2. Step 2: Convert to fraction form
    426,067.60/639,101.40 = 268,992.40/x
  3. Step 3: Cross multiply
    426,067.60x = 639,101.40 × 268,992.40
  4. Step 4: Simplify right side
    426,067.60x = 171,913,419,429.36
  5. Step 5: Solve for x
    x = 171,913,419,429.36/426,067.60
  6. Step 6: Final answer
    x = 403,488.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.