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Finding the Third Proportional to 320,653 and 507,719

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Solution

The third proportional to 320,653 and 507,719 is: 803,917.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,653 : 507,719 = 507,719 : x
  2. Step 2: Convert to fraction form
    320,653/507,719 = 507,719/x
  3. Step 3: Cross multiply
    320,653x = 507,719 × 507,719
  4. Step 4: Simplify right side
    320,653x = 257,778,582,961
  5. Step 5: Solve for x
    x = 257,778,582,961/320,653
  6. Step 6: Final answer
    x = 803,917.58

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.