Finding the Fourth Proportional to 715,164.28, 987,012.36 and 428,674.84
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Solution
The fourth proportional to 715,164.28, 987,012.36 and 428,674.84 is: 591,622.62
Step by Step Solution
- Step 1: Write the proportion equation
715,164.28 : 987,012.36 = 428,674.84 : x - Step 2: Convert to fraction form
715,164.28/987,012.36 = 428,674.84/x - Step 3: Cross multiply
715,164.28x = 987,012.36 × 428,674.84 - Step 4: Simplify right side
715,164.28x = 423,107,365,501.02 - Step 5: Solve for x
x = 423,107,365,501.02/715,164.28 - Step 6: Final answer
x = 591,622.62
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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.