Finding the Fourth Proportional to 2,235,455,998.40, 3,353,183,997.60 and 781,281,790.40
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Solution
The fourth proportional to 2,235,455,998.40, 3,353,183,997.60 and 781,281,790.40 is: 1,171,922,685.60
Step by Step Solution
- Step 1: Write the proportion equation
2,235,455,998.40 : 3,353,183,997.60 = 781,281,790.40 : x - Step 2: Convert to fraction form
2,235,455,998.40/3,353,183,997.60 = 781,281,790.40/x - Step 3: Cross multiply
2,235,455,998.40x = 3,353,183,997.60 × 781,281,790.40 - Step 4: Simplify right side
2,235,455,998.40x = 2,619,781,597,185,556,992 - Step 5: Solve for x
x = 2,619,781,597,185,556,992/2,235,455,998.40 - Step 6: Final answer
x = 1,171,922,685.60
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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.