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Finding the Third Proportional to 378,740.81 and 828,741.38

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Solution

The third proportional to 378,740.81 and 828,741.38 is: 1,813,409.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,740.81 : 828,741.38 = 828,741.38 : x
  2. Step 2: Convert to fraction form
    378,740.81/828,741.38 = 828,741.38/x
  3. Step 3: Cross multiply
    378,740.81x = 828,741.38 × 828,741.38
  4. Step 4: Simplify right side
    378,740.81x = 686,812,266,636.89
  5. Step 5: Solve for x
    x = 686,812,266,636.89/378,740.81
  6. Step 6: Final answer
    x = 1,813,409.71

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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.