Finding the Fourth Proportional to 716,411.61, 988,608.99 and 394,069.68
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Solution
The fourth proportional to 716,411.61, 988,608.99 and 394,069.68 is: 543,794.69
Step by Step Solution
- Step 1: Write the proportion equation
716,411.61 : 988,608.99 = 394,069.68 : x - Step 2: Convert to fraction form
716,411.61/988,608.99 = 394,069.68/x - Step 3: Cross multiply
716,411.61x = 988,608.99 × 394,069.68 - Step 4: Simplify right side
716,411.61x = 389,580,828,334.42 - Step 5: Solve for x
x = 389,580,828,334.42/716,411.61 - Step 6: Final answer
x = 543,794.69
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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.