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Finding the Third Proportional to 292,908 and 637,980

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Solution

The third proportional to 292,908 and 637,980 is: 1,389,577.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,908 : 637,980 = 637,980 : x
  2. Step 2: Convert to fraction form
    292,908/637,980 = 637,980/x
  3. Step 3: Cross multiply
    292,908x = 637,980 × 637,980
  4. Step 4: Simplify right side
    292,908x = 407,018,480,400
  5. Step 5: Solve for x
    x = 407,018,480,400/292,908
  6. Step 6: Final answer
    x = 1,389,577.89

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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.