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Finding the Third Proportional to 1,287,841.78 and 2,828,484.56

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Solution

The third proportional to 1,287,841.78 and 2,828,484.56 is: 6,212,195.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,841.78 : 2,828,484.56 = 2,828,484.56 : x
  2. Step 2: Convert to fraction form
    1,287,841.78/2,828,484.56 = 2,828,484.56/x
  3. Step 3: Cross multiply
    1,287,841.78x = 2,828,484.56 × 2,828,484.56
  4. Step 4: Simplify right side
    1,287,841.78x = 8,000,324,920,300.82
  5. Step 5: Solve for x
    x = 8,000,324,920,300.82/1,287,841.78
  6. Step 6: Final answer
    x = 6,212,195.50

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.