Finding the Fourth Proportional to 664,585.13, 917,115.74 and 378,099.07
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Solution
The fourth proportional to 664,585.13, 917,115.74 and 378,099.07 is: 521,770.04
Step by Step Solution
- Step 1: Write the proportion equation
664,585.13 : 917,115.74 = 378,099.07 : x - Step 2: Convert to fraction form
664,585.13/917,115.74 = 378,099.07/x - Step 3: Cross multiply
664,585.13x = 917,115.74 × 378,099.07 - Step 4: Simplify right side
664,585.13x = 346,760,608,376.36 - Step 5: Solve for x
x = 346,760,608,376.36/664,585.13 - Step 6: Final answer
x = 521,770.04
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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.