Finding the Fourth Proportional to 721,455.84, 995,638.41 and 399,160.71
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Solution
The fourth proportional to 721,455.84, 995,638.41 and 399,160.71 is: 550,858.02
Step by Step Solution
- Step 1: Write the proportion equation
721,455.84 : 995,638.41 = 399,160.71 : x - Step 2: Convert to fraction form
721,455.84/995,638.41 = 399,160.71/x - Step 3: Cross multiply
721,455.84x = 995,638.41 × 399,160.71 - Step 4: Simplify right side
721,455.84x = 397,419,734,638.87 - Step 5: Solve for x
x = 397,419,734,638.87/721,455.84 - Step 6: Final answer
x = 550,858.02
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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.