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Finding the Third Proportional to 380,157.75 and 830,416.50

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Solution

The third proportional to 380,157.75 and 830,416.50 is: 1,813,961.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,157.75 : 830,416.50 = 830,416.50 : x
  2. Step 2: Convert to fraction form
    380,157.75/830,416.50 = 830,416.50/x
  3. Step 3: Cross multiply
    380,157.75x = 830,416.50 × 830,416.50
  4. Step 4: Simplify right side
    380,157.75x = 689,591,563,472.25
  5. Step 5: Solve for x
    x = 689,591,563,472.25/380,157.75
  6. Step 6: Final answer
    x = 1,813,961.61

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.