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Finding the Third Proportional to 8,415,728 and 18,406,090

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Solution

The third proportional to 8,415,728 and 18,406,090 is: 40,256,071.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415,728 : 18,406,090 = 18,406,090 : x
  2. Step 2: Convert to fraction form
    8,415,728/18,406,090 = 18,406,090/x
  3. Step 3: Cross multiply
    8,415,728x = 18,406,090 × 18,406,090
  4. Step 4: Simplify right side
    8,415,728x = 338,784,149,088,100
  5. Step 5: Solve for x
    x = 338,784,149,088,100/8,415,728
  6. Step 6: Final answer
    x = 40,256,071.62

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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.