Finding the Fourth Proportional to 478,678.68, 660,546.84 and 263,806.80
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Solution
The fourth proportional to 478,678.68, 660,546.84 and 263,806.80 is: 364,036.99
Step by Step Solution
- Step 1: Write the proportion equation
478,678.68 : 660,546.84 = 263,806.80 : x - Step 2: Convert to fraction form
478,678.68/660,546.84 = 263,806.80/x - Step 3: Cross multiply
478,678.68x = 660,546.84 × 263,806.80 - Step 4: Simplify right side
478,678.68x = 174,256,748,110.51 - Step 5: Solve for x
x = 174,256,748,110.51/478,678.68 - Step 6: Final answer
x = 364,036.99
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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.