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Finding the Third Proportional to 388,836 and 556,038

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Solution

The third proportional to 388,836 and 556,038 is: 795,137.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,836 : 556,038 = 556,038 : x
  2. Step 2: Convert to fraction form
    388,836/556,038 = 556,038/x
  3. Step 3: Cross multiply
    388,836x = 556,038 × 556,038
  4. Step 4: Simplify right side
    388,836x = 309,178,257,444
  5. Step 5: Solve for x
    x = 309,178,257,444/388,836
  6. Step 6: Final answer
    x = 795,137.94

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.