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Finding the Third Proportional to 402,426 and 837,908

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Solution

The third proportional to 402,426 and 837,908 is: 1,744,643.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,426 : 837,908 = 837,908 : x
  2. Step 2: Convert to fraction form
    402,426/837,908 = 837,908/x
  3. Step 3: Cross multiply
    402,426x = 837,908 × 837,908
  4. Step 4: Simplify right side
    402,426x = 702,089,816,464
  5. Step 5: Solve for x
    x = 702,089,816,464/402,426
  6. Step 6: Final answer
    x = 1,744,643.28

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.