Finding the Fourth Proportional to 716,277.96, 988,447.44 and 393,980.97
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Solution
The fourth proportional to 716,277.96, 988,447.44 and 393,980.97 is: 543,684.86
Step by Step Solution
- Step 1: Write the proportion equation
716,277.96 : 988,447.44 = 393,980.97 : x - Step 2: Convert to fraction form
716,277.96/988,447.44 = 393,980.97/x - Step 3: Cross multiply
716,277.96x = 988,447.44 × 393,980.97 - Step 4: Simplify right side
716,277.96x = 389,429,481,205.22 - Step 5: Solve for x
x = 389,429,481,205.22/716,277.96 - Step 6: Final answer
x = 543,684.86
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1.5x scale
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.