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Finding the Third Proportional to 173,478,858 and 378,601,980

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Solution

The third proportional to 173,478,858 and 378,601,980 is: 826,264,715.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,478,858 : 378,601,980 = 378,601,980 : x
  2. Step 2: Convert to fraction form
    173,478,858/378,601,980 = 378,601,980/x
  3. Step 3: Cross multiply
    173,478,858x = 378,601,980 × 378,601,980
  4. Step 4: Simplify right side
    173,478,858x = 143,339,459,259,920,400
  5. Step 5: Solve for x
    x = 143,339,459,259,920,400/173,478,858
  6. Step 6: Final answer
    x = 826,264,715.55

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.