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Finding the Third Proportional to 128,735,568 and 279,422,784

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Solution

The third proportional to 128,735,568 and 279,422,784 is: 606,492,000.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,735,568 : 279,422,784 = 279,422,784 : x
  2. Step 2: Convert to fraction form
    128,735,568/279,422,784 = 279,422,784/x
  3. Step 3: Cross multiply
    128,735,568x = 279,422,784 × 279,422,784
  4. Step 4: Simplify right side
    128,735,568x = 78,077,092,218,310,656
  5. Step 5: Solve for x
    x = 78,077,092,218,310,656/128,735,568
  6. Step 6: Final answer
    x = 606,492,000.86

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These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.