Finding the Fourth Proportional to 861,391.44, 1,292,291.64 and 270,415.44
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Solution
The fourth proportional to 861,391.44, 1,292,291.64 and 270,415.44 is: 405,687.35
Step by Step Solution
- Step 1: Write the proportion equation
861,391.44 : 1,292,291.64 = 270,415.44 : x - Step 2: Convert to fraction form
861,391.44/1,292,291.64 = 270,415.44/x - Step 3: Cross multiply
861,391.44x = 1,292,291.64 × 270,415.44 - Step 4: Simplify right side
861,391.44x = 349,455,612,438.92 - Step 5: Solve for x
x = 349,455,612,438.92/861,391.44 - Step 6: Final answer
x = 405,687.35
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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.