Home / 920,396.20-1,380,791.42-521,225.64

Finding the Fourth Proportional to 920,396.20, 1,380,791.42 and 521,225.64

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Solution

The fourth proportional to 920,396.20, 1,380,791.42 and 521,225.64 is: 781,950.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,396.20 : 1,380,791.42 = 521,225.64 : x
  2. Step 2: Convert to fraction form
    920,396.20/1,380,791.42 = 521,225.64/x
  3. Step 3: Cross multiply
    920,396.20x = 1,380,791.42 × 521,225.64
  4. Step 4: Simplify right side
    920,396.20x = 719,703,891,596.01
  5. Step 5: Solve for x
    x = 719,703,891,596.01/920,396.20
  6. Step 6: Final answer
    x = 781,950.09

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Double scale
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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.