Home / 659,383,605.60-989,075,408.40-199,261,987.80

Finding the Fourth Proportional to 659,383,605.60, 989,075,408.40 and 199,261,987.80

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Solution

The fourth proportional to 659,383,605.60, 989,075,408.40 and 199,261,987.80 is: 298,892,981.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,383,605.60 : 989,075,408.40 = 199,261,987.80 : x
  2. Step 2: Convert to fraction form
    659,383,605.60/989,075,408.40 = 199,261,987.80/x
  3. Step 3: Cross multiply
    659,383,605.60x = 989,075,408.40 × 199,261,987.80
  4. Step 4: Simplify right side
    659,383,605.60x = 197,085,131,961,880,832
  5. Step 5: Solve for x
    x = 197,085,131,961,880,832/659,383,605.60
  6. Step 6: Final answer
    x = 298,892,981.70

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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.