Home / 815,276.94-1,217,425.32-665,813.73

Finding the Fourth Proportional to 815,276.94, 1,217,425.32 and 665,813.73

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Solution

The fourth proportional to 815,276.94, 1,217,425.32 and 665,813.73 is: 994,236.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,276.94 : 1,217,425.32 = 665,813.73 : x
  2. Step 2: Convert to fraction form
    815,276.94/1,217,425.32 = 665,813.73/x
  3. Step 3: Cross multiply
    815,276.94x = 1,217,425.32 × 665,813.73
  4. Step 4: Simplify right side
    815,276.94x = 810,578,493,305.64
  5. Step 5: Solve for x
    x = 810,578,493,305.64/815,276.94
  6. Step 6: Final answer
    x = 994,236.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.