Finding the Fourth Proportional to 779,431.20, 1,168,903.80 and 306,261.60
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Solution
The fourth proportional to 779,431.20, 1,168,903.80 and 306,261.60 is: 459,296.92
Step by Step Solution
- Step 1: Write the proportion equation
779,431.20 : 1,168,903.80 = 306,261.60 : x - Step 2: Convert to fraction form
779,431.20/1,168,903.80 = 306,261.60/x - Step 3: Cross multiply
779,431.20x = 1,168,903.80 × 306,261.60 - Step 4: Simplify right side
779,431.20x = 357,990,348,034.08 - Step 5: Solve for x
x = 357,990,348,034.08/779,431.20 - Step 6: Final answer
x = 459,296.92
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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.