Finding the Fourth Proportional to 775,989,625.36, 1,070,705,827.56 and 445,900,991.44
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Solution
The fourth proportional to 775,989,625.36, 1,070,705,827.56 and 445,900,991.44 is: 615,251,511.68
Step by Step Solution
- Step 1: Write the proportion equation
775,989,625.36 : 1,070,705,827.56 = 445,900,991.44 : x - Step 2: Convert to fraction form
775,989,625.36/1,070,705,827.56 = 445,900,991.44/x - Step 3: Cross multiply
775,989,625.36x = 1,070,705,827.56 × 445,900,991.44 - Step 4: Simplify right side
775,989,625.36x = 477,428,790,049,589,632 - Step 5: Solve for x
x = 477,428,790,049,589,632/775,989,625.36 - Step 6: Final answer
x = 615,251,511.68
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Double scale
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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.