Finding the Fourth Proportional to 664,379.40, 916,873.39 and 374,090.79
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Solution
The fourth proportional to 664,379.40, 916,873.39 and 374,090.79 is: 516,262.08
Step by Step Solution
- Step 1: Write the proportion equation
664,379.40 : 916,873.39 = 374,090.79 : x - Step 2: Convert to fraction form
664,379.40/916,873.39 = 374,090.79/x - Step 3: Cross multiply
664,379.40x = 916,873.39 × 374,090.79 - Step 4: Simplify right side
664,379.40x = 342,993,890,795.08 - Step 5: Solve for x
x = 342,993,890,795.08/664,379.40 - Step 6: Final answer
x = 516,262.08
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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.