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Finding the Third Proportional to 389,838 and 854,127

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Solution

The third proportional to 389,838 and 854,127 is: 1,871,374.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,838 : 854,127 = 854,127 : x
  2. Step 2: Convert to fraction form
    389,838/854,127 = 854,127/x
  3. Step 3: Cross multiply
    389,838x = 854,127 × 854,127
  4. Step 4: Simplify right side
    389,838x = 729,532,932,129
  5. Step 5: Solve for x
    x = 729,532,932,129/389,838
  6. Step 6: Final answer
    x = 1,871,374.60

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.