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Finding the Third Proportional to 687,244.50 and 1,421,631

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Solution

The third proportional to 687,244.50 and 1,421,631 is: 2,940,779.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,244.50 : 1,421,631 = 1,421,631 : x
  2. Step 2: Convert to fraction form
    687,244.50/1,421,631 = 1,421,631/x
  3. Step 3: Cross multiply
    687,244.50x = 1,421,631 × 1,421,631
  4. Step 4: Simplify right side
    687,244.50x = 2,021,034,700,161
  5. Step 5: Solve for x
    x = 2,021,034,700,161/687,244.50
  6. Step 6: Final answer
    x = 2,940,779.74

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.