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Finding the Third Proportional to 908,805 and 1,911,621

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Solution

The third proportional to 908,805 and 1,911,621 is: 4,020,988.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,805 : 1,911,621 = 1,911,621 : x
  2. Step 2: Convert to fraction form
    908,805/1,911,621 = 1,911,621/x
  3. Step 3: Cross multiply
    908,805x = 1,911,621 × 1,911,621
  4. Step 4: Simplify right side
    908,805x = 3,654,294,847,641
  5. Step 5: Solve for x
    x = 3,654,294,847,641/908,805
  6. Step 6: Final answer
    x = 4,020,988.93

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.