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Finding the Third Proportional to 388,809.56 and 555,998.34

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Solution

The third proportional to 388,809.56 and 555,998.34 is: 795,078.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,809.56 : 555,998.34 = 555,998.34 : x
  2. Step 2: Convert to fraction form
    388,809.56/555,998.34 = 555,998.34/x
  3. Step 3: Cross multiply
    388,809.56x = 555,998.34 × 555,998.34
  4. Step 4: Simplify right side
    388,809.56x = 309,134,158,252.74
  5. Step 5: Solve for x
    x = 309,134,158,252.74/388,809.56
  6. Step 6: Final answer
    x = 795,078.59

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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.