Finding the Fourth Proportional to 921,860.48, 1,382,790.72 and 290,838.08
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Solution
The fourth proportional to 921,860.48, 1,382,790.72 and 290,838.08 is: 436,257.12
Step by Step Solution
- Step 1: Write the proportion equation
921,860.48 : 1,382,790.72 = 290,838.08 : x - Step 2: Convert to fraction form
921,860.48/1,382,790.72 = 290,838.08/x - Step 3: Cross multiply
921,860.48x = 1,382,790.72 × 290,838.08 - Step 4: Simplify right side
921,860.48x = 402,168,198,046.62 - Step 5: Solve for x
x = 402,168,198,046.62/921,860.48 - Step 6: Final answer
x = 436,257.12
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1.5x scale
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.