Finding the Fourth Proportional to 1,820,478,191.25, 2,512,266,565.37 and 985,102,770.45
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Solution
The fourth proportional to 1,820,478,191.25, 2,512,266,565.37 and 985,102,770.45 is: 1,359,445,427.88
Step by Step Solution
- Step 1: Write the proportion equation
1,820,478,191.25 : 2,512,266,565.37 = 985,102,770.45 : x - Step 2: Convert to fraction form
1,820,478,191.25/2,512,266,565.37 = 985,102,770.45/x - Step 3: Cross multiply
1,820,478,191.25x = 2,512,266,565.37 × 985,102,770.45 - Step 4: Simplify right side
1,820,478,191.25x = 2,474,840,753,649,967,616 - Step 5: Solve for x
x = 2,474,840,753,649,967,616/1,820,478,191.25 - Step 6: Final answer
x = 1,359,445,427.88
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1.5x scale
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.