Home / 258,784,515,471.21-388,218,484,793.46-79,710,418,978.89

Finding the Fourth Proportional to 258,784,515,471.21, 388,218,484,793.46 and 79,710,418,978.89

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Solution

The fourth proportional to 258,784,515,471.21, 388,218,484,793.46 and 79,710,418,978.89 is: 119,578,476,408.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,784,515,471.21 : 388,218,484,793.46 = 79,710,418,978.89 : x
  2. Step 2: Convert to fraction form
    258,784,515,471.21/388,218,484,793.46 = 79,710,418,978.89/x
  3. Step 3: Cross multiply
    258,784,515,471.21x = 388,218,484,793.46 × 79,710,418,978.89
  4. Step 4: Simplify right side
    258,784,515,471.21x = 30,945,058,078,236,535,160,832
  5. Step 5: Solve for x
    x = 30,945,058,078,236,535,160,832/258,784,515,471.21
  6. Step 6: Final answer
    x = 119,578,476,408.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.