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Finding the Third Proportional to 427,389,894 and 638,568,918

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Solution

The third proportional to 427,389,894 and 638,568,918 is: 954,094,303.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,389,894 : 638,568,918 = 638,568,918 : x
  2. Step 2: Convert to fraction form
    427,389,894/638,568,918 = 638,568,918/x
  3. Step 3: Cross multiply
    427,389,894x = 638,568,918 × 638,568,918
  4. Step 4: Simplify right side
    427,389,894x = 407,770,263,035,690,752
  5. Step 5: Solve for x
    x = 407,770,263,035,690,752/427,389,894
  6. Step 6: Final answer
    x = 954,094,303.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.