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Finding the Third Proportional to 426,429.50 and 919,285.75

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Solution

The third proportional to 426,429.50 and 919,285.75 is: 1,981,772.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,429.50 : 919,285.75 = 919,285.75 : x
  2. Step 2: Convert to fraction form
    426,429.50/919,285.75 = 919,285.75/x
  3. Step 3: Cross multiply
    426,429.50x = 919,285.75 × 919,285.75
  4. Step 4: Simplify right side
    426,429.50x = 845,086,290,153.06
  5. Step 5: Solve for x
    x = 845,086,290,153.06/426,429.50
  6. Step 6: Final answer
    x = 1,981,772.58

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.