Finding the Fourth Proportional to 816,879.60, 1,226,485.80 and 639,586.80
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Solution
The fourth proportional to 816,879.60, 1,226,485.80 and 639,586.80 is: 960,293.45
Step by Step Solution
- Step 1: Write the proportion equation
816,879.60 : 1,226,485.80 = 639,586.80 : x - Step 2: Convert to fraction form
816,879.60/1,226,485.80 = 639,586.80/x - Step 3: Cross multiply
816,879.60x = 1,226,485.80 × 639,586.80 - Step 4: Simplify right side
816,879.60x = 784,444,128,067.44 - Step 5: Solve for x
x = 784,444,128,067.44/816,879.60 - Step 6: Final answer
x = 960,293.45
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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.