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Finding the Fourth Proportional to 555,976,753.12, 767,233,311.42 and 305,080,374.16

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Solution

The fourth proportional to 555,976,753.12, 767,233,311.42 and 305,080,374.16 is: 421,002,900.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,976,753.12 : 767,233,311.42 = 305,080,374.16 : x
  2. Step 2: Convert to fraction form
    555,976,753.12/767,233,311.42 = 305,080,374.16/x
  3. Step 3: Cross multiply
    555,976,753.12x = 767,233,311.42 × 305,080,374.16
  4. Step 4: Simplify right side
    555,976,753.12x = 234,067,825,716,029,408
  5. Step 5: Solve for x
    x = 234,067,825,716,029,408/555,976,753.12
  6. Step 6: Final answer
    x = 421,002,900.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.