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Finding the Third Proportional to 1,390,678.88 and 2,887,940.25

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Solution

The third proportional to 1,390,678.88 and 2,887,940.25 is: 5,997,214.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,678.88 : 2,887,940.25 = 2,887,940.25 : x
  2. Step 2: Convert to fraction form
    1,390,678.88/2,887,940.25 = 2,887,940.25/x
  3. Step 3: Cross multiply
    1,390,678.88x = 2,887,940.25 × 2,887,940.25
  4. Step 4: Simplify right side
    1,390,678.88x = 8,340,198,887,570.06
  5. Step 5: Solve for x
    x = 8,340,198,887,570.06/1,390,678.88
  6. Step 6: Final answer
    x = 5,997,214.05

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.