Home / 856,145.72-1,284,231.22-406,912.44

Finding the Fourth Proportional to 856,145.72, 1,284,231.22 and 406,912.44

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Solution

The fourth proportional to 856,145.72, 1,284,231.22 and 406,912.44 is: 610,374.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,145.72 : 1,284,231.22 = 406,912.44 : x
  2. Step 2: Convert to fraction form
    856,145.72/1,284,231.22 = 406,912.44/x
  3. Step 3: Cross multiply
    856,145.72x = 1,284,231.22 × 406,912.44
  4. Step 4: Simplify right side
    856,145.72x = 522,569,659,254.38
  5. Step 5: Solve for x
    x = 522,569,659,254.38/856,145.72
  6. Step 6: Final answer
    x = 610,374.67

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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.