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Finding the Third Proportional to 425,639 and 890,704

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Solution

The third proportional to 425,639 and 890,704 is: 1,863,911.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,639 : 890,704 = 890,704 : x
  2. Step 2: Convert to fraction form
    425,639/890,704 = 890,704/x
  3. Step 3: Cross multiply
    425,639x = 890,704 × 890,704
  4. Step 4: Simplify right side
    425,639x = 793,353,615,616
  5. Step 5: Solve for x
    x = 793,353,615,616/425,639
  6. Step 6: Final answer
    x = 1,863,911.94

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.