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Finding the Third Proportional to 420,720 and 923,088

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Solution

The third proportional to 420,720 and 923,088 is: 2,025,317.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,720 : 923,088 = 923,088 : x
  2. Step 2: Convert to fraction form
    420,720/923,088 = 923,088/x
  3. Step 3: Cross multiply
    420,720x = 923,088 × 923,088
  4. Step 4: Simplify right side
    420,720x = 852,091,455,744
  5. Step 5: Solve for x
    x = 852,091,455,744/420,720
  6. Step 6: Final answer
    x = 2,025,317.21

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.