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Finding the Third Proportional to 393,915 and 802,258

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Solution

The third proportional to 393,915 and 802,258 is: 1,633,900.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,915 : 802,258 = 802,258 : x
  2. Step 2: Convert to fraction form
    393,915/802,258 = 802,258/x
  3. Step 3: Cross multiply
    393,915x = 802,258 × 802,258
  4. Step 4: Simplify right side
    393,915x = 643,617,898,564
  5. Step 5: Solve for x
    x = 643,617,898,564/393,915
  6. Step 6: Final answer
    x = 1,633,900.46

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.