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Finding the Third Proportional to 389,838 and 583,171

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Solution

The third proportional to 389,838 and 583,171 is: 872,383.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,838 : 583,171 = 583,171 : x
  2. Step 2: Convert to fraction form
    389,838/583,171 = 583,171/x
  3. Step 3: Cross multiply
    389,838x = 583,171 × 583,171
  4. Step 4: Simplify right side
    389,838x = 340,088,415,241
  5. Step 5: Solve for x
    x = 340,088,415,241/389,838
  6. Step 6: Final answer
    x = 872,383.95

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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.