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Finding the Third Proportional to 637,449 and 1,390,809

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Solution

The third proportional to 637,449 and 1,390,809 is: 3,034,516.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,449 : 1,390,809 = 1,390,809 : x
  2. Step 2: Convert to fraction form
    637,449/1,390,809 = 1,390,809/x
  3. Step 3: Cross multiply
    637,449x = 1,390,809 × 1,390,809
  4. Step 4: Simplify right side
    637,449x = 1,934,349,674,481
  5. Step 5: Solve for x
    x = 1,934,349,674,481/637,449
  6. Step 6: Final answer
    x = 3,034,516.76

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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.