Finding the Fourth Proportional to 1,192,129,273.36, 1,645,109,362.15 and 656,276,583.12
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Solution
The fourth proportional to 1,192,129,273.36, 1,645,109,362.15 and 656,276,583.12 is: 905,645,700.66
Step by Step Solution
- Step 1: Write the proportion equation
1,192,129,273.36 : 1,645,109,362.15 = 656,276,583.12 : x - Step 2: Convert to fraction form
1,192,129,273.36/1,645,109,362.15 = 656,276,583.12/x - Step 3: Cross multiply
1,192,129,273.36x = 1,645,109,362.15 × 656,276,583.12 - Step 4: Simplify right side
1,192,129,273.36x = 1,079,646,751,050,524,672 - Step 5: Solve for x
x = 1,079,646,751,050,524,672/1,192,129,273.36 - Step 6: Final answer
x = 905,645,700.66
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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.