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Finding the Third Proportional to 399,577.50 and 603,495

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Solution

The third proportional to 399,577.50 and 603,495 is: 911,478.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,577.50 : 603,495 = 603,495 : x
  2. Step 2: Convert to fraction form
    399,577.50/603,495 = 603,495/x
  3. Step 3: Cross multiply
    399,577.50x = 603,495 × 603,495
  4. Step 4: Simplify right side
    399,577.50x = 364,206,215,025
  5. Step 5: Solve for x
    x = 364,206,215,025/399,577.50
  6. Step 6: Final answer
    x = 911,478.29

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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.