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Finding the Fourth Proportional to 479,449.21, 661,888.67 and 350,242.60

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Solution

The fourth proportional to 479,449.21, 661,888.67 and 350,242.60 is: 483,516.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,449.21 : 661,888.67 = 350,242.60 : x
  2. Step 2: Convert to fraction form
    479,449.21/661,888.67 = 350,242.60/x
  3. Step 3: Cross multiply
    479,449.21x = 661,888.67 × 350,242.60
  4. Step 4: Simplify right side
    479,449.21x = 231,821,608,691.34
  5. Step 5: Solve for x
    x = 231,821,608,691.34/479,449.21
  6. Step 6: Final answer
    x = 483,516.51

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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.