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Finding the Third Proportional to 292,438 and 637,760

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Solution

The third proportional to 292,438 and 637,760 is: 1,390,851.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,438 : 637,760 = 637,760 : x
  2. Step 2: Convert to fraction form
    292,438/637,760 = 637,760/x
  3. Step 3: Cross multiply
    292,438x = 637,760 × 637,760
  4. Step 4: Simplify right side
    292,438x = 406,737,817,600
  5. Step 5: Solve for x
    x = 406,737,817,600/292,438
  6. Step 6: Final answer
    x = 1,390,851.45

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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.