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Finding the Third Proportional to 7,457,391 and 11,515,768.50

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Solution

The third proportional to 7,457,391 and 11,515,768.50 is: 17,782,750.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,457,391 : 11,515,768.50 = 11,515,768.50 : x
  2. Step 2: Convert to fraction form
    7,457,391/11,515,768.50 = 11,515,768.50/x
  3. Step 3: Cross multiply
    7,457,391x = 11,515,768.50 × 11,515,768.50
  4. Step 4: Simplify right side
    7,457,391x = 132,612,924,145,592.25
  5. Step 5: Solve for x
    x = 132,612,924,145,592.25/7,457,391
  6. Step 6: Final answer
    x = 17,782,750.58

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.