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Finding the Third Proportional to 290,716 and 623,458

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Solution

The third proportional to 290,716 and 623,458 is: 1,337,043.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,716 : 623,458 = 623,458 : x
  2. Step 2: Convert to fraction form
    290,716/623,458 = 623,458/x
  3. Step 3: Cross multiply
    290,716x = 623,458 × 623,458
  4. Step 4: Simplify right side
    290,716x = 388,699,877,764
  5. Step 5: Solve for x
    x = 388,699,877,764/290,716
  6. Step 6: Final answer
    x = 1,337,043.29

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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.