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Finding the Third Proportional to 399,380.63 and 859,655.25

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Solution

The third proportional to 399,380.63 and 859,655.25 is: 1,850,383.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,380.63 : 859,655.25 = 859,655.25 : x
  2. Step 2: Convert to fraction form
    399,380.63/859,655.25 = 859,655.25/x
  3. Step 3: Cross multiply
    399,380.63x = 859,655.25 × 859,655.25
  4. Step 4: Simplify right side
    399,380.63x = 739,007,148,852.56
  5. Step 5: Solve for x
    x = 739,007,148,852.56/399,380.63
  6. Step 6: Final answer
    x = 1,850,383.07

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.