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Finding the Third Proportional to 278,919,655 and 608,060,556

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Solution

The third proportional to 278,919,655 and 608,060,556 is: 1,325,606,256.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,919,655 : 608,060,556 = 608,060,556 : x
  2. Step 2: Convert to fraction form
    278,919,655/608,060,556 = 608,060,556/x
  3. Step 3: Cross multiply
    278,919,655x = 608,060,556 × 608,060,556
  4. Step 4: Simplify right side
    278,919,655x = 369,737,639,763,029,120
  5. Step 5: Solve for x
    x = 369,737,639,763,029,120/278,919,655
  6. Step 6: Final answer
    x = 1,325,606,256.62

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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.