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Finding the Third Proportional to 639,798 and 1,400,124

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Solution

The third proportional to 639,798 and 1,400,124 is: 3,064,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,798 : 1,400,124 = 1,400,124 : x
  2. Step 2: Convert to fraction form
    639,798/1,400,124 = 1,400,124/x
  3. Step 3: Cross multiply
    639,798x = 1,400,124 × 1,400,124
  4. Step 4: Simplify right side
    639,798x = 1,960,347,215,376
  5. Step 5: Solve for x
    x = 1,960,347,215,376/639,798
  6. Step 6: Final answer
    x = 3,064,009.60

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These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.