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Finding the Third Proportional to 388,600 and 916,028

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Solution

The third proportional to 388,600 and 916,028 is: 2,159,308.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,600 : 916,028 = 916,028 : x
  2. Step 2: Convert to fraction form
    388,600/916,028 = 916,028/x
  3. Step 3: Cross multiply
    388,600x = 916,028 × 916,028
  4. Step 4: Simplify right side
    388,600x = 839,107,296,784
  5. Step 5: Solve for x
    x = 839,107,296,784/388,600
  6. Step 6: Final answer
    x = 2,159,308.54

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.