Finding the Fourth Proportional to 805,969,610.40, 1,208,954,415.60 and 295,299,991.20
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Solution
The fourth proportional to 805,969,610.40, 1,208,954,415.60 and 295,299,991.20 is: 442,949,986.80
Step by Step Solution
- Step 1: Write the proportion equation
805,969,610.40 : 1,208,954,415.60 = 295,299,991.20 : x - Step 2: Convert to fraction form
805,969,610.40/1,208,954,415.60 = 295,299,991.20/x - Step 3: Cross multiply
805,969,610.40x = 1,208,954,415.60 × 295,299,991.20 - Step 4: Simplify right side
805,969,610.40x = 357,004,228,287,881,088 - Step 5: Solve for x
x = 357,004,228,287,881,088/805,969,610.40 - Step 6: Final answer
x = 442,949,986.80
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.