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Finding the Fourth Proportional to 659,611.22, 989,889.24 and 280,797.54

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Solution

The fourth proportional to 659,611.22, 989,889.24 and 280,797.54 is: 421,397.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,611.22 : 989,889.24 = 280,797.54 : x
  2. Step 2: Convert to fraction form
    659,611.22/989,889.24 = 280,797.54/x
  3. Step 3: Cross multiply
    659,611.22x = 989,889.24 × 280,797.54
  4. Step 4: Simplify right side
    659,611.22x = 277,958,463,464.47
  5. Step 5: Solve for x
    x = 277,958,463,464.47/659,611.22
  6. Step 6: Final answer
    x = 421,397.42

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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.