Finding the Fourth Proportional to 873,431.68, 1,205,321.76 and 491,458.24
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Solution
The fourth proportional to 873,431.68, 1,205,321.76 and 491,458.24 is: 678,204.52
Step by Step Solution
- Step 1: Write the proportion equation
873,431.68 : 1,205,321.76 = 491,458.24 : x - Step 2: Convert to fraction form
873,431.68/1,205,321.76 = 491,458.24/x - Step 3: Cross multiply
873,431.68x = 1,205,321.76 × 491,458.24 - Step 4: Simplify right side
873,431.68x = 592,365,310,803.30 - Step 5: Solve for x
x = 592,365,310,803.30/873,431.68 - Step 6: Final answer
x = 678,204.52
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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.