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Finding the Third Proportional to 390,118 and 843,052

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Solution

The third proportional to 390,118 and 843,052 is: 1,821,850.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,118 : 843,052 = 843,052 : x
  2. Step 2: Convert to fraction form
    390,118/843,052 = 843,052/x
  3. Step 3: Cross multiply
    390,118x = 843,052 × 843,052
  4. Step 4: Simplify right side
    390,118x = 710,736,674,704
  5. Step 5: Solve for x
    x = 710,736,674,704/390,118
  6. Step 6: Final answer
    x = 1,821,850.50

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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.