Finding the Fourth Proportional to 554,236.42, 764,781.26 and 312,504.60
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Solution
The fourth proportional to 554,236.42, 764,781.26 and 312,504.60 is: 431,219.70
Step by Step Solution
- Step 1: Write the proportion equation
554,236.42 : 764,781.26 = 312,504.60 : x - Step 2: Convert to fraction form
554,236.42/764,781.26 = 312,504.60/x - Step 3: Cross multiply
554,236.42x = 764,781.26 × 312,504.60 - Step 4: Simplify right side
554,236.42x = 238,997,661,743.80 - Step 5: Solve for x
x = 238,997,661,743.80/554,236.42 - Step 6: Final answer
x = 431,219.70
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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.