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Finding the Third Proportional to 388,866 and 556,071

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Solution

The third proportional to 388,866 and 556,071 is: 795,170.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,866 : 556,071 = 556,071 : x
  2. Step 2: Convert to fraction form
    388,866/556,071 = 556,071/x
  3. Step 3: Cross multiply
    388,866x = 556,071 × 556,071
  4. Step 4: Simplify right side
    388,866x = 309,214,957,041
  5. Step 5: Solve for x
    x = 309,214,957,041/388,866
  6. Step 6: Final answer
    x = 795,170.98

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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.