Home / 420,015.40-629,859.30-183,196.60

Finding the Fourth Proportional to 420,015.40, 629,859.30 and 183,196.60

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Solution

The fourth proportional to 420,015.40, 629,859.30 and 183,196.60 is: 274,723.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,015.40 : 629,859.30 = 183,196.60 : x
  2. Step 2: Convert to fraction form
    420,015.40/629,859.30 = 183,196.60/x
  3. Step 3: Cross multiply
    420,015.40x = 629,859.30 × 183,196.60
  4. Step 4: Simplify right side
    420,015.40x = 115,388,082,238.38
  5. Step 5: Solve for x
    x = 115,388,082,238.38/420,015.40
  6. Step 6: Final answer
    x = 274,723.46

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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.