Home / 660,519,072.40-990,778,608.60-200,456,503.60

Finding the Fourth Proportional to 660,519,072.40, 990,778,608.60 and 200,456,503.60

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Solution

The fourth proportional to 660,519,072.40, 990,778,608.60 and 200,456,503.60 is: 300,684,755.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,519,072.40 : 990,778,608.60 = 200,456,503.60 : x
  2. Step 2: Convert to fraction form
    660,519,072.40/990,778,608.60 = 200,456,503.60/x
  3. Step 3: Cross multiply
    660,519,072.40x = 990,778,608.60 × 200,456,503.60
  4. Step 4: Simplify right side
    660,519,072.40x = 198,608,015,721,628,896
  5. Step 5: Solve for x
    x = 198,608,015,721,628,896/660,519,072.40
  6. Step 6: Final answer
    x = 300,684,755.40

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1.5x scale

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.