Finding the Fourth Proportional to 715,427.48, 987,074.62 and 428,843.00
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Solution
The fourth proportional to 715,427.48, 987,074.62 and 428,843.00 is: 591,674.28
Step by Step Solution
- Step 1: Write the proportion equation
715,427.48 : 987,074.62 = 428,843.00 : x - Step 2: Convert to fraction form
715,427.48/987,074.62 = 428,843.00/x - Step 3: Cross multiply
715,427.48x = 987,074.62 × 428,843.00 - Step 4: Simplify right side
715,427.48x = 423,300,035,257.18 - Step 5: Solve for x
x = 423,300,035,257.18/715,427.48 - Step 6: Final answer
x = 591,674.28
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.