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Finding the Third Proportional to 1,209,211 and 2,639,470

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Solution

The third proportional to 1,209,211 and 2,639,470 is: 5,761,444.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,211 : 2,639,470 = 2,639,470 : x
  2. Step 2: Convert to fraction form
    1,209,211/2,639,470 = 2,639,470/x
  3. Step 3: Cross multiply
    1,209,211x = 2,639,470 × 2,639,470
  4. Step 4: Simplify right side
    1,209,211x = 6,966,801,880,900
  5. Step 5: Solve for x
    x = 6,966,801,880,900/1,209,211
  6. Step 6: Final answer
    x = 5,761,444.35

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.