Finding the Fourth Proportional to 426,329.60, 639,724.80 and 189,708.80
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Solution
The fourth proportional to 426,329.60, 639,724.80 and 189,708.80 is: 284,665.72
Step by Step Solution
- Step 1: Write the proportion equation
426,329.60 : 639,724.80 = 189,708.80 : x - Step 2: Convert to fraction form
426,329.60/639,724.80 = 189,708.80/x - Step 3: Cross multiply
426,329.60x = 639,724.80 × 189,708.80 - Step 4: Simplify right side
426,329.60x = 121,361,424,138.24 - Step 5: Solve for x
x = 121,361,424,138.24/426,329.60 - Step 6: Final answer
x = 284,665.72
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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.