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Finding the Third Proportional to 3,121,854.75 and 6,329,829.38

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Solution

The third proportional to 3,121,854.75 and 6,329,829.38 is: 12,834,274.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121,854.75 : 6,329,829.38 = 6,329,829.38 : x
  2. Step 2: Convert to fraction form
    3,121,854.75/6,329,829.38 = 6,329,829.38/x
  3. Step 3: Cross multiply
    3,121,854.75x = 6,329,829.38 × 6,329,829.38
  4. Step 4: Simplify right side
    3,121,854.75x = 40,066,739,916,612.89
  5. Step 5: Solve for x
    x = 40,066,739,916,612.89/3,121,854.75
  6. Step 6: Final answer
    x = 12,834,274.21

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.