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Finding the Third Proportional to 1,990,365.75 and 4,678,479

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Solution

The third proportional to 1,990,365.75 and 4,678,479 is: 10,997,057.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,365.75 : 4,678,479 = 4,678,479 : x
  2. Step 2: Convert to fraction form
    1,990,365.75/4,678,479 = 4,678,479/x
  3. Step 3: Cross multiply
    1,990,365.75x = 4,678,479 × 4,678,479
  4. Step 4: Simplify right side
    1,990,365.75x = 21,888,165,753,441
  5. Step 5: Solve for x
    x = 21,888,165,753,441/1,990,365.75
  6. Step 6: Final answer
    x = 10,997,057.08

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.