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Finding the Fourth Proportional to 490,856.72, 677,433.47 and 299,997.23

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Solution

The fourth proportional to 490,856.72, 677,433.47 and 299,997.23 is: 414,027.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,856.72 : 677,433.47 = 299,997.23 : x
  2. Step 2: Convert to fraction form
    490,856.72/677,433.47 = 299,997.23/x
  3. Step 3: Cross multiply
    490,856.72x = 677,433.47 × 299,997.23
  4. Step 4: Simplify right side
    490,856.72x = 203,228,159,622.14
  5. Step 5: Solve for x
    x = 203,228,159,622.14/490,856.72
  6. Step 6: Final answer
    x = 414,027.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.