Finding the Fourth Proportional to 716,099.19, 988,197.17 and 393,809.28
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Solution
The fourth proportional to 716,099.19, 988,197.17 and 393,809.28 is: 543,445.96
Step by Step Solution
- Step 1: Write the proportion equation
716,099.19 : 988,197.17 = 393,809.28 : x - Step 2: Convert to fraction form
716,099.19/988,197.17 = 393,809.28/x - Step 3: Cross multiply
716,099.19x = 988,197.17 × 393,809.28 - Step 4: Simplify right side
716,099.19x = 389,161,214,046.69 - Step 5: Solve for x
x = 389,161,214,046.69/716,099.19 - Step 6: Final answer
x = 543,445.96
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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.