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Finding the Fourth Proportional to 640,650.38, 960,611.63 and 261,126.59

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Solution

The fourth proportional to 640,650.38, 960,611.63 and 261,126.59 is: 391,541.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,650.38 : 960,611.63 = 261,126.59 : x
  2. Step 2: Convert to fraction form
    640,650.38/960,611.63 = 261,126.59/x
  3. Step 3: Cross multiply
    640,650.38x = 960,611.63 × 261,126.59
  4. Step 4: Simplify right side
    640,650.38x = 250,841,233,147.55
  5. Step 5: Solve for x
    x = 250,841,233,147.55/640,650.38
  6. Step 6: Final answer
    x = 391,541.54

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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.