Finding the Fourth Proportional to 638,321.60, 957,622.80 and 189,077.60
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Solution
The fourth proportional to 638,321.60, 957,622.80 and 189,077.60 is: 283,657.99
Step by Step Solution
- Step 1: Write the proportion equation
638,321.60 : 957,622.80 = 189,077.60 : x - Step 2: Convert to fraction form
638,321.60/957,622.80 = 189,077.60/x - Step 3: Cross multiply
638,321.60x = 957,622.80 × 189,077.60 - Step 4: Simplify right side
638,321.60x = 181,065,020,729.28 - Step 5: Solve for x
x = 181,065,020,729.28/638,321.60 - Step 6: Final answer
x = 283,657.99
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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.