Finding the Fourth Proportional to 1,438,879.32, 2,157,812.31 and 479,074.26
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Solution
The fourth proportional to 1,438,879.32, 2,157,812.31 and 479,074.26 is: 718,442.69
Step by Step Solution
- Step 1: Write the proportion equation
1,438,879.32 : 2,157,812.31 = 479,074.26 : x - Step 2: Convert to fraction form
1,438,879.32/2,157,812.31 = 479,074.26/x - Step 3: Cross multiply
1,438,879.32x = 2,157,812.31 × 479,074.26 - Step 4: Simplify right side
1,438,879.32x = 1,033,752,335,632.14 - Step 5: Solve for x
x = 1,033,752,335,632.14/1,438,879.32 - Step 6: Final answer
x = 718,442.69
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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.