Home / 815,257.94-1,217,396.96-665,794.74

Finding the Fourth Proportional to 815,257.94, 1,217,396.96 and 665,794.74

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Solution

The fourth proportional to 815,257.94, 1,217,396.96 and 665,794.74 is: 994,208.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,257.94 : 1,217,396.96 = 665,794.74 : x
  2. Step 2: Convert to fraction form
    815,257.94/1,217,396.96 = 665,794.74/x
  3. Step 3: Cross multiply
    815,257.94x = 1,217,396.96 × 665,794.74
  4. Step 4: Simplify right side
    815,257.94x = 810,536,492,459.99
  5. Step 5: Solve for x
    x = 810,536,492,459.99/815,257.94
  6. Step 6: Final answer
    x = 994,208.65

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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.