Finding the Fourth Proportional to 985,268,810.12, 1,352,428,379.77 and 871,261,724.84
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Solution
The fourth proportional to 985,268,810.12, 1,352,428,379.77 and 871,261,724.84 is: 1,195,936,652.80
Step by Step Solution
- Step 1: Write the proportion equation
985,268,810.12 : 1,352,428,379.77 = 871,261,724.84 : x - Step 2: Convert to fraction form
985,268,810.12/1,352,428,379.77 = 871,261,724.84/x - Step 3: Cross multiply
985,268,810.12x = 1,352,428,379.77 × 871,261,724.84 - Step 4: Simplify right side
985,268,810.12x = 1,178,319,082,880,976,896 - Step 5: Solve for x
x = 1,178,319,082,880,976,896/985,268,810.12 - Step 6: Final answer
x = 1,195,936,652.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.