Finding the Fourth Proportional to 664,993.69, 917,697.12 and 378,532.19
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Solution
The fourth proportional to 664,993.69, 917,697.12 and 378,532.19 is: 522,377.74
Step by Step Solution
- Step 1: Write the proportion equation
664,993.69 : 917,697.12 = 378,532.19 : x - Step 2: Convert to fraction form
664,993.69/917,697.12 = 378,532.19/x - Step 3: Cross multiply
664,993.69x = 917,697.12 × 378,532.19 - Step 4: Simplify right side
664,993.69x = 347,377,901,465.04 - Step 5: Solve for x
x = 347,377,901,465.04/664,993.69 - Step 6: Final answer
x = 522,377.74
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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.