Finding the Fourth Proportional to 1,107,622,840.46, 1,528,990,163.98 and 690,141,391.29
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Solution
The fourth proportional to 1,107,622,840.46, 1,528,990,163.98 and 690,141,391.29 is: 952,688,370.53
Step by Step Solution
- Step 1: Write the proportion equation
1,107,622,840.46 : 1,528,990,163.98 = 690,141,391.29 : x - Step 2: Convert to fraction form
1,107,622,840.46/1,528,990,163.98 = 690,141,391.29/x - Step 3: Cross multiply
1,107,622,840.46x = 1,528,990,163.98 × 690,141,391.29 - Step 4: Simplify right side
1,107,622,840.46x = 1,055,219,399,036,157,056 - Step 5: Solve for x
x = 1,055,219,399,036,157,056/1,107,622,840.46 - Step 6: Final answer
x = 952,688,370.53
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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.