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Finding the Third Proportional to 464,512 and 678,842

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Solution

The third proportional to 464,512 and 678,842 is: 992,065.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,512 : 678,842 = 678,842 : x
  2. Step 2: Convert to fraction form
    464,512/678,842 = 678,842/x
  3. Step 3: Cross multiply
    464,512x = 678,842 × 678,842
  4. Step 4: Simplify right side
    464,512x = 460,826,460,964
  5. Step 5: Solve for x
    x = 460,826,460,964/464,512
  6. Step 6: Final answer
    x = 992,065.78

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.