Finding the Fourth Proportional to 664,378.40, 916,872.01 and 374,089.79
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Solution
The fourth proportional to 664,378.40, 916,872.01 and 374,089.79 is: 516,260.70
Step by Step Solution
- Step 1: Write the proportion equation
664,378.40 : 916,872.01 = 374,089.79 : x - Step 2: Convert to fraction form
664,378.40/916,872.01 = 374,089.79/x - Step 3: Cross multiply
664,378.40x = 916,872.01 × 374,089.79 - Step 4: Simplify right side
664,378.40x = 342,992,459,034.73 - Step 5: Solve for x
x = 342,992,459,034.73/664,378.40 - Step 6: Final answer
x = 516,260.70
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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.