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Finding the Third Proportional to 636,320.81 and 890,088.75

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Solution

The third proportional to 636,320.81 and 890,088.75 is: 1,245,060.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,320.81 : 890,088.75 = 890,088.75 : x
  2. Step 2: Convert to fraction form
    636,320.81/890,088.75 = 890,088.75/x
  3. Step 3: Cross multiply
    636,320.81x = 890,088.75 × 890,088.75
  4. Step 4: Simplify right side
    636,320.81x = 792,257,982,876.56
  5. Step 5: Solve for x
    x = 792,257,982,876.56/636,320.81
  6. Step 6: Final answer
    x = 1,245,060.62

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.