Finding the Fourth Proportional to 717,453.84, 990,131.21 and 395,163.79
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Solution
The fourth proportional to 717,453.84, 990,131.21 and 395,163.79 is: 545,350.77
Step by Step Solution
- Step 1: Write the proportion equation
717,453.84 : 990,131.21 = 395,163.79 : x - Step 2: Convert to fraction form
717,453.84/990,131.21 = 395,163.79/x - Step 3: Cross multiply
717,453.84x = 990,131.21 × 395,163.79 - Step 4: Simplify right side
717,453.84x = 391,264,001,540.89 - Step 5: Solve for x
x = 391,264,001,540.89/717,453.84 - Step 6: Final answer
x = 545,350.77
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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.