Finding the Fourth Proportional to 1,276,723.14, 1,915,364.76 and 378,235.12
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Solution
The fourth proportional to 1,276,723.14, 1,915,364.76 and 378,235.12 is: 567,435.65
Step by Step Solution
- Step 1: Write the proportion equation
1,276,723.14 : 1,915,364.76 = 378,235.12 : x - Step 2: Convert to fraction form
1,276,723.14/1,915,364.76 = 378,235.12/x - Step 3: Cross multiply
1,276,723.14x = 1,915,364.76 × 378,235.12 - Step 4: Simplify right side
1,276,723.14x = 724,458,219,842.37 - Step 5: Solve for x
x = 724,458,219,842.37/1,276,723.14 - Step 6: Final answer
x = 567,435.65
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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.