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Finding the Third Proportional to 399,375 and 603,220.50

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Solution

The third proportional to 399,375 and 603,220.50 is: 911,111.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,375 : 603,220.50 = 603,220.50 : x
  2. Step 2: Convert to fraction form
    399,375/603,220.50 = 603,220.50/x
  3. Step 3: Cross multiply
    399,375x = 603,220.50 × 603,220.50
  4. Step 4: Simplify right side
    399,375x = 363,874,971,620.25
  5. Step 5: Solve for x
    x = 363,874,971,620.25/399,375
  6. Step 6: Final answer
    x = 911,111.04

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.