Home / 425,826.79-639,183.06-313,633.69

Finding the Fourth Proportional to 425,826.79, 639,183.06 and 313,633.69

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Solution

The fourth proportional to 425,826.79, 639,183.06 and 313,633.69 is: 470,776.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,826.79 : 639,183.06 = 313,633.69 : x
  2. Step 2: Convert to fraction form
    425,826.79/639,183.06 = 313,633.69/x
  3. Step 3: Cross multiply
    425,826.79x = 639,183.06 × 313,633.69
  4. Step 4: Simplify right side
    425,826.79x = 200,469,341,693.29
  5. Step 5: Solve for x
    x = 200,469,341,693.29/425,826.79
  6. Step 6: Final answer
    x = 470,776.73

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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.