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Finding the Third Proportional to 315,520.88 and 684,279

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Solution

The third proportional to 315,520.88 and 684,279 is: 1,484,015.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,520.88 : 684,279 = 684,279 : x
  2. Step 2: Convert to fraction form
    315,520.88/684,279 = 684,279/x
  3. Step 3: Cross multiply
    315,520.88x = 684,279 × 684,279
  4. Step 4: Simplify right side
    315,520.88x = 468,237,749,841
  5. Step 5: Solve for x
    x = 468,237,749,841/315,520.88
  6. Step 6: Final answer
    x = 1,484,015.12

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.