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Finding the Third Proportional to 774,669 and 1,678,020

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Solution

The third proportional to 774,669 and 1,678,020 is: 3,634,779.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,669 : 1,678,020 = 1,678,020 : x
  2. Step 2: Convert to fraction form
    774,669/1,678,020 = 1,678,020/x
  3. Step 3: Cross multiply
    774,669x = 1,678,020 × 1,678,020
  4. Step 4: Simplify right side
    774,669x = 2,815,751,120,400
  5. Step 5: Solve for x
    x = 2,815,751,120,400/774,669
  6. Step 6: Final answer
    x = 3,634,779.65

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.