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Finding the Third Proportional to 457,234.50 and 679,239

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Solution

The third proportional to 457,234.50 and 679,239 is: 1,009,035.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,234.50 : 679,239 = 679,239 : x
  2. Step 2: Convert to fraction form
    457,234.50/679,239 = 679,239/x
  3. Step 3: Cross multiply
    457,234.50x = 679,239 × 679,239
  4. Step 4: Simplify right side
    457,234.50x = 461,365,619,121
  5. Step 5: Solve for x
    x = 461,365,619,121/457,234.50
  6. Step 6: Final answer
    x = 1,009,035.01

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.