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Finding the Third Proportional to 1,390,423.22 and 2,151,791.58

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Solution

The third proportional to 1,390,423.22 and 2,151,791.58 is: 3,330,070.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,423.22 : 2,151,791.58 = 2,151,791.58 : x
  2. Step 2: Convert to fraction form
    1,390,423.22/2,151,791.58 = 2,151,791.58/x
  3. Step 3: Cross multiply
    1,390,423.22x = 2,151,791.58 × 2,151,791.58
  4. Step 4: Simplify right side
    1,390,423.22x = 4,630,206,995,689.68
  5. Step 5: Solve for x
    x = 4,630,206,995,689.68/1,390,423.22
  6. Step 6: Final answer
    x = 3,330,070.25

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.