Home / 692,919.54-1,039,381.72-213,144.09

Finding the Fourth Proportional to 692,919.54, 1,039,381.72 and 213,144.09

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Solution

The fourth proportional to 692,919.54, 1,039,381.72 and 213,144.09 is: 319,716.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,919.54 : 1,039,381.72 = 213,144.09 : x
  2. Step 2: Convert to fraction form
    692,919.54/1,039,381.72 = 213,144.09/x
  3. Step 3: Cross multiply
    692,919.54x = 1,039,381.72 × 213,144.09
  4. Step 4: Simplify right side
    692,919.54x = 221,538,066,441.49
  5. Step 5: Solve for x
    x = 221,538,066,441.49/692,919.54
  6. Step 6: Final answer
    x = 319,716.87

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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.