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Finding the Third Proportional to 290,282 and 426,887

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Solution

The third proportional to 290,282 and 426,887 is: 627,777.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,282 : 426,887 = 426,887 : x
  2. Step 2: Convert to fraction form
    290,282/426,887 = 426,887/x
  3. Step 3: Cross multiply
    290,282x = 426,887 × 426,887
  4. Step 4: Simplify right side
    290,282x = 182,232,510,769
  5. Step 5: Solve for x
    x = 182,232,510,769/290,282
  6. Step 6: Final answer
    x = 627,777.51

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.