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Finding the Third Proportional to 1,390,818 and 2,981,247

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Solution

The third proportional to 1,390,818 and 2,981,247 is: 6,390,364.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,818 : 2,981,247 = 2,981,247 : x
  2. Step 2: Convert to fraction form
    1,390,818/2,981,247 = 2,981,247/x
  3. Step 3: Cross multiply
    1,390,818x = 2,981,247 × 2,981,247
  4. Step 4: Simplify right side
    1,390,818x = 8,887,833,675,009
  5. Step 5: Solve for x
    x = 8,887,833,675,009/1,390,818
  6. Step 6: Final answer
    x = 6,390,364.29

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.