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Finding the Third Proportional to 418,099.50 and 617,305.50

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Solution

The third proportional to 418,099.50 and 617,305.50 is: 911,424.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,099.50 : 617,305.50 = 617,305.50 : x
  2. Step 2: Convert to fraction form
    418,099.50/617,305.50 = 617,305.50/x
  3. Step 3: Cross multiply
    418,099.50x = 617,305.50 × 617,305.50
  4. Step 4: Simplify right side
    418,099.50x = 381,066,080,330.25
  5. Step 5: Solve for x
    x = 381,066,080,330.25/418,099.50
  6. Step 6: Final answer
    x = 911,424.39

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.