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Finding the Third Proportional to 3,989,512.50 and 6,318,265.50

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Solution

The third proportional to 3,989,512.50 and 6,318,265.50 is: 10,006,355.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989,512.50 : 6,318,265.50 = 6,318,265.50 : x
  2. Step 2: Convert to fraction form
    3,989,512.50/6,318,265.50 = 6,318,265.50/x
  3. Step 3: Cross multiply
    3,989,512.50x = 6,318,265.50 × 6,318,265.50
  4. Step 4: Simplify right side
    3,989,512.50x = 39,920,478,928,490.25
  5. Step 5: Solve for x
    x = 39,920,478,928,490.25/3,989,512.50
  6. Step 6: Final answer
    x = 10,006,355.14

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.