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Finding the Third Proportional to 389,611.13 and 582,859.69

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Solution

The third proportional to 389,611.13 and 582,859.69 is: 871,960.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,611.13 : 582,859.69 = 582,859.69 : x
  2. Step 2: Convert to fraction form
    389,611.13/582,859.69 = 582,859.69/x
  3. Step 3: Cross multiply
    389,611.13x = 582,859.69 × 582,859.69
  4. Step 4: Simplify right side
    389,611.13x = 339,725,415,312.60
  5. Step 5: Solve for x
    x = 339,725,415,312.60/389,611.13
  6. Step 6: Final answer
    x = 871,960.25

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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.