Home / 821,245.11-1,234,054.64-442,456.71

Finding the Fourth Proportional to 821,245.11, 1,234,054.64 and 442,456.71

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Solution

The fourth proportional to 821,245.11, 1,234,054.64 and 442,456.71 is: 664,863.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,245.11 : 1,234,054.64 = 442,456.71 : x
  2. Step 2: Convert to fraction form
    821,245.11/1,234,054.64 = 442,456.71/x
  3. Step 3: Cross multiply
    821,245.11x = 1,234,054.64 × 442,456.71
  4. Step 4: Simplify right side
    821,245.11x = 546,015,755,974.63
  5. Step 5: Solve for x
    x = 546,015,755,974.63/821,245.11
  6. Step 6: Final answer
    x = 664,863.33

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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.