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Finding the Third Proportional to 639,506 and 1,381,476

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Solution

The third proportional to 639,506 and 1,381,476 is: 2,984,297.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,506 : 1,381,476 = 1,381,476 : x
  2. Step 2: Convert to fraction form
    639,506/1,381,476 = 1,381,476/x
  3. Step 3: Cross multiply
    639,506x = 1,381,476 × 1,381,476
  4. Step 4: Simplify right side
    639,506x = 1,908,475,938,576
  5. Step 5: Solve for x
    x = 1,908,475,938,576/639,506
  6. Step 6: Final answer
    x = 2,984,297.16

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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.