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Finding the Third Proportional to 328,315 and 718,910

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Solution

The third proportional to 328,315 and 718,910 is: 1,574,194.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,315 : 718,910 = 718,910 : x
  2. Step 2: Convert to fraction form
    328,315/718,910 = 718,910/x
  3. Step 3: Cross multiply
    328,315x = 718,910 × 718,910
  4. Step 4: Simplify right side
    328,315x = 516,831,588,100
  5. Step 5: Solve for x
    x = 516,831,588,100/328,315
  6. Step 6: Final answer
    x = 1,574,194.26

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.