Home / 659,315,201.80-989,114,520.30-199,299,872.20

Finding the Fourth Proportional to 659,315,201.80, 989,114,520.30 and 199,299,872.20

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Solution

The fourth proportional to 659,315,201.80, 989,114,520.30 and 199,299,872.20 is: 298,992,647.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,315,201.80 : 989,114,520.30 = 199,299,872.20 : x
  2. Step 2: Convert to fraction form
    659,315,201.80/989,114,520.30 = 199,299,872.20/x
  3. Step 3: Cross multiply
    659,315,201.80x = 989,114,520.30 × 199,299,872.20
  4. Step 4: Simplify right side
    659,315,201.80x = 197,130,397,486,954,272
  5. Step 5: Solve for x
    x = 197,130,397,486,954,272/659,315,201.80
  6. Step 6: Final answer
    x = 298,992,647.14

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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.