Home / 659,589,985.20-989,133,035.40-199,375,201.20

Finding the Fourth Proportional to 659,589,985.20, 989,133,035.40 and 199,375,201.20

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Solution

The fourth proportional to 659,589,985.20, 989,133,035.40 and 199,375,201.20 is: 298,986,646.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,589,985.20 : 989,133,035.40 = 199,375,201.20 : x
  2. Step 2: Convert to fraction form
    659,589,985.20/989,133,035.40 = 199,375,201.20/x
  3. Step 3: Cross multiply
    659,589,985.20x = 989,133,035.40 × 199,375,201.20
  4. Step 4: Simplify right side
    659,589,985.20x = 197,208,597,946,441,696
  5. Step 5: Solve for x
    x = 197,208,597,946,441,696/659,589,985.20
  6. Step 6: Final answer
    x = 298,986,646.81

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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.