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Finding the Third Proportional to 1,390,655.78 and 2,887,893.63

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Solution

The third proportional to 1,390,655.78 and 2,887,893.63 is: 5,997,120.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,655.78 : 2,887,893.63 = 2,887,893.63 : x
  2. Step 2: Convert to fraction form
    1,390,655.78/2,887,893.63 = 2,887,893.63/x
  3. Step 3: Cross multiply
    1,390,655.78x = 2,887,893.63 × 2,887,893.63
  4. Step 4: Simplify right side
    1,390,655.78x = 8,339,929,634,438.98
  5. Step 5: Solve for x
    x = 8,339,929,634,438.98/1,390,655.78
  6. Step 6: Final answer
    x = 5,997,120.04

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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.