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Finding the Third Proportional to 378,313 and 830,336

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Solution

The third proportional to 378,313 and 830,336 is: 1,822,453.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,313 : 830,336 = 830,336 : x
  2. Step 2: Convert to fraction form
    378,313/830,336 = 830,336/x
  3. Step 3: Cross multiply
    378,313x = 830,336 × 830,336
  4. Step 4: Simplify right side
    378,313x = 689,457,872,896
  5. Step 5: Solve for x
    x = 689,457,872,896/378,313
  6. Step 6: Final answer
    x = 1,822,453.56

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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.