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Finding the Third Proportional to 619,310 and 905,068

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Solution

The third proportional to 619,310 and 905,068 is: 1,322,678.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,310 : 905,068 = 905,068 : x
  2. Step 2: Convert to fraction form
    619,310/905,068 = 905,068/x
  3. Step 3: Cross multiply
    619,310x = 905,068 × 905,068
  4. Step 4: Simplify right side
    619,310x = 819,148,084,624
  5. Step 5: Solve for x
    x = 819,148,084,624/619,310
  6. Step 6: Final answer
    x = 1,322,678.60

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.