Finding the Fourth Proportional to 521,874.21, 720,186.52 and 317,925.07
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Solution
The fourth proportional to 521,874.21, 720,186.52 and 317,925.07 is: 438,736.66
Step by Step Solution
- Step 1: Write the proportion equation
521,874.21 : 720,186.52 = 317,925.07 : x - Step 2: Convert to fraction form
521,874.21/720,186.52 = 317,925.07/x - Step 3: Cross multiply
521,874.21x = 720,186.52 × 317,925.07 - Step 4: Simplify right side
521,874.21x = 228,965,348,916.25 - Step 5: Solve for x
x = 228,965,348,916.25/521,874.21 - Step 6: Final answer
x = 438,736.66
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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.