Finding the Fourth Proportional to 981,153.09, 1,471,445.33 and 381,980.70
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Solution
The fourth proportional to 981,153.09, 1,471,445.33 and 381,980.70 is: 572,860.36
Step by Step Solution
- Step 1: Write the proportion equation
981,153.09 : 1,471,445.33 = 381,980.70 : x - Step 2: Convert to fraction form
981,153.09/1,471,445.33 = 381,980.70/x - Step 3: Cross multiply
981,153.09x = 1,471,445.33 × 381,980.70 - Step 4: Simplify right side
981,153.09x = 562,063,715,255.23 - Step 5: Solve for x
x = 562,063,715,255.23/981,153.09 - Step 6: Final answer
x = 572,860.36
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.