Home / 668,869.60-1,003,632.36-313,912.48

Finding the Fourth Proportional to 668,869.60, 1,003,632.36 and 313,912.48

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Solution

The fourth proportional to 668,869.60, 1,003,632.36 and 313,912.48 is: 471,022.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,869.60 : 1,003,632.36 = 313,912.48 : x
  2. Step 2: Convert to fraction form
    668,869.60/1,003,632.36 = 313,912.48/x
  3. Step 3: Cross multiply
    668,869.60x = 1,003,632.36 × 313,912.48
  4. Step 4: Simplify right side
    668,869.60x = 315,052,723,135.85
  5. Step 5: Solve for x
    x = 315,052,723,135.85/668,869.60
  6. Step 6: Final answer
    x = 471,022.64

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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.