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Finding the Third Proportional to 656,790 and 1,418,356

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Solution

The third proportional to 656,790 and 1,418,356 is: 3,062,978.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,790 : 1,418,356 = 1,418,356 : x
  2. Step 2: Convert to fraction form
    656,790/1,418,356 = 1,418,356/x
  3. Step 3: Cross multiply
    656,790x = 1,418,356 × 1,418,356
  4. Step 4: Simplify right side
    656,790x = 2,011,733,742,736
  5. Step 5: Solve for x
    x = 2,011,733,742,736/656,790
  6. Step 6: Final answer
    x = 3,062,978.64

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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.