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Finding the Third Proportional to 338,431 and 507,719

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Solution

The third proportional to 338,431 and 507,719 is: 761,687.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,431 : 507,719 = 507,719 : x
  2. Step 2: Convert to fraction form
    338,431/507,719 = 507,719/x
  3. Step 3: Cross multiply
    338,431x = 507,719 × 507,719
  4. Step 4: Simplify right side
    338,431x = 257,778,582,961
  5. Step 5: Solve for x
    x = 257,778,582,961/338,431
  6. Step 6: Final answer
    x = 761,687.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.