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Finding the Third Proportional to 639,223.52 and 1,379,848.92

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Solution

The third proportional to 639,223.52 and 1,379,848.92 is: 2,978,587.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,223.52 : 1,379,848.92 = 1,379,848.92 : x
  2. Step 2: Convert to fraction form
    639,223.52/1,379,848.92 = 1,379,848.92/x
  3. Step 3: Cross multiply
    639,223.52x = 1,379,848.92 × 1,379,848.92
  4. Step 4: Simplify right side
    639,223.52x = 1,903,983,047,199.60
  5. Step 5: Solve for x
    x = 1,903,983,047,199.60/639,223.52
  6. Step 6: Final answer
    x = 2,978,587.27

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.