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Finding the Third Proportional to 343,413 and 745,911

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Solution

The third proportional to 343,413 and 745,911 is: 1,620,157.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,413 : 745,911 = 745,911 : x
  2. Step 2: Convert to fraction form
    343,413/745,911 = 745,911/x
  3. Step 3: Cross multiply
    343,413x = 745,911 × 745,911
  4. Step 4: Simplify right side
    343,413x = 556,383,219,921
  5. Step 5: Solve for x
    x = 556,383,219,921/343,413
  6. Step 6: Final answer
    x = 1,620,157.71

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.