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Finding the Third Proportional to 620,381 and 1,339,798

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Solution

The third proportional to 620,381 and 1,339,798 is: 2,893,477.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,381 : 1,339,798 = 1,339,798 : x
  2. Step 2: Convert to fraction form
    620,381/1,339,798 = 1,339,798/x
  3. Step 3: Cross multiply
    620,381x = 1,339,798 × 1,339,798
  4. Step 4: Simplify right side
    620,381x = 1,795,058,680,804
  5. Step 5: Solve for x
    x = 1,795,058,680,804/620,381
  6. Step 6: Final answer
    x = 2,893,477.85

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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.