Finding the Fourth Proportional to 2,167,909,738.50, 2,991,715,438.84 and 1,228,112,380.42
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Solution
The fourth proportional to 2,167,909,738.50, 2,991,715,438.84 and 1,228,112,380.42 is: 1,694,795,084.81
Step by Step Solution
- Step 1: Write the proportion equation
2,167,909,738.50 : 2,991,715,438.84 = 1,228,112,380.42 : x - Step 2: Convert to fraction form
2,167,909,738.50/2,991,715,438.84 = 1,228,112,380.42/x - Step 3: Cross multiply
2,167,909,738.50x = 2,991,715,438.84 × 1,228,112,380.42 - Step 4: Simplify right side
2,167,909,738.50x = 3,674,162,769,122,507,776 - Step 5: Solve for x
x = 3,674,162,769,122,507,776/2,167,909,738.50 - Step 6: Final answer
x = 1,694,795,084.81
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.