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Finding the Third Proportional to 908,421 and 1,971,387

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Solution

The third proportional to 908,421 and 1,971,387 is: 4,278,155.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,421 : 1,971,387 = 1,971,387 : x
  2. Step 2: Convert to fraction form
    908,421/1,971,387 = 1,971,387/x
  3. Step 3: Cross multiply
    908,421x = 1,971,387 × 1,971,387
  4. Step 4: Simplify right side
    908,421x = 3,886,366,703,769
  5. Step 5: Solve for x
    x = 3,886,366,703,769/908,421
  6. Step 6: Final answer
    x = 4,278,155.95

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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.