Finding the Fourth Proportional to 1,820,478,163.38, 2,512,266,526.90 and 985,102,742.58
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Solution
The fourth proportional to 1,820,478,163.38, 2,512,266,526.90 and 985,102,742.58 is: 1,359,445,389.42
Step by Step Solution
- Step 1: Write the proportion equation
1,820,478,163.38 : 2,512,266,526.90 = 985,102,742.58 : x - Step 2: Convert to fraction form
1,820,478,163.38/2,512,266,526.90 = 985,102,742.58/x - Step 3: Cross multiply
1,820,478,163.38x = 2,512,266,526.90 × 985,102,742.58 - Step 4: Simplify right side
1,820,478,163.38x = 2,474,840,645,741,121,536 - Step 5: Solve for x
x = 2,474,840,645,741,121,536/1,820,478,163.38 - Step 6: Final answer
x = 1,359,445,389.42
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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.