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Finding the Third Proportional to 298,459,323.75 and 642,268,279.50

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Solution

The third proportional to 298,459,323.75 and 642,268,279.50 is: 1,382,126,507.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,459,323.75 : 642,268,279.50 = 642,268,279.50 : x
  2. Step 2: Convert to fraction form
    298,459,323.75/642,268,279.50 = 642,268,279.50/x
  3. Step 3: Cross multiply
    298,459,323.75x = 642,268,279.50 × 642,268,279.50
  4. Step 4: Simplify right side
    298,459,323.75x = 412,508,542,851,890,112
  5. Step 5: Solve for x
    x = 412,508,542,851,890,112/298,459,323.75
  6. Step 6: Final answer
    x = 1,382,126,507.79

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.