Finding the Fourth Proportional to 985,268,809.12, 1,352,428,378.40 and 871,261,723.84
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Solution
The fourth proportional to 985,268,809.12, 1,352,428,378.40 and 871,261,723.84 is: 1,195,936,651.43
Step by Step Solution
- Step 1: Write the proportion equation
985,268,809.12 : 1,352,428,378.40 = 871,261,723.84 : x - Step 2: Convert to fraction form
985,268,809.12/1,352,428,378.40 = 871,261,723.84/x - Step 3: Cross multiply
985,268,809.12x = 1,352,428,378.40 × 871,261,723.84 - Step 4: Simplify right side
985,268,809.12x = 1,178,319,080,334,919,936 - Step 5: Solve for x
x = 1,178,319,080,334,919,936/985,268,809.12 - Step 6: Final answer
x = 1,195,936,651.43
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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.