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Finding the Third Proportional to 642,973 and 1,374,524

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Solution

The third proportional to 642,973 and 1,374,524 is: 2,938,406.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,973 : 1,374,524 = 1,374,524 : x
  2. Step 2: Convert to fraction form
    642,973/1,374,524 = 1,374,524/x
  3. Step 3: Cross multiply
    642,973x = 1,374,524 × 1,374,524
  4. Step 4: Simplify right side
    642,973x = 1,889,316,226,576
  5. Step 5: Solve for x
    x = 1,889,316,226,576/642,973
  6. Step 6: Final answer
    x = 2,938,406.79

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.