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Finding the Third Proportional to 313,120 and 419,454

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Solution

The third proportional to 313,120 and 419,454 is: 561,898.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,120 : 419,454 = 419,454 : x
  2. Step 2: Convert to fraction form
    313,120/419,454 = 419,454/x
  3. Step 3: Cross multiply
    313,120x = 419,454 × 419,454
  4. Step 4: Simplify right side
    313,120x = 175,941,658,116
  5. Step 5: Solve for x
    x = 175,941,658,116/313,120
  6. Step 6: Final answer
    x = 561,898.50

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.