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Finding the Third Proportional to 555,138,860 and 1,219,226,390

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Solution

The third proportional to 555,138,860 and 1,219,226,390 is: 2,677,731,820.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,138,860 : 1,219,226,390 = 1,219,226,390 : x
  2. Step 2: Convert to fraction form
    555,138,860/1,219,226,390 = 1,219,226,390/x
  3. Step 3: Cross multiply
    555,138,860x = 1,219,226,390 × 1,219,226,390
  4. Step 4: Simplify right side
    555,138,860x = 1,486,512,990,072,432,128
  5. Step 5: Solve for x
    x = 1,486,512,990,072,432,128/555,138,860
  6. Step 6: Final answer
    x = 2,677,731,820.24

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.