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Finding the Third Proportional to 315,293.75 and 691,904.75

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Solution

The third proportional to 315,293.75 and 691,904.75 is: 1,518,368.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,293.75 : 691,904.75 = 691,904.75 : x
  2. Step 2: Convert to fraction form
    315,293.75/691,904.75 = 691,904.75/x
  3. Step 3: Cross multiply
    315,293.75x = 691,904.75 × 691,904.75
  4. Step 4: Simplify right side
    315,293.75x = 478,732,183,072.56
  5. Step 5: Solve for x
    x = 478,732,183,072.56/315,293.75
  6. Step 6: Final answer
    x = 1,518,368.77

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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.