Finding the Fourth Proportional to 485,703.75, 670,271.18 and 284,499.75
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Solution
The fourth proportional to 485,703.75, 670,271.18 and 284,499.75 is: 392,609.66
Step by Step Solution
- Step 1: Write the proportion equation
485,703.75 : 670,271.18 = 284,499.75 : x - Step 2: Convert to fraction form
485,703.75/670,271.18 = 284,499.75/x - Step 3: Cross multiply
485,703.75x = 670,271.18 × 284,499.75 - Step 4: Simplify right side
485,703.75x = 190,691,981,719.71 - Step 5: Solve for x
x = 190,691,981,719.71/485,703.75 - Step 6: Final answer
x = 392,609.66
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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.