Finding the Fourth Proportional to 529,689.76, 730,985.97 and 287,988.64
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Solution
The fourth proportional to 529,689.76, 730,985.97 and 287,988.64 is: 397,431.99
Step by Step Solution
- Step 1: Write the proportion equation
529,689.76 : 730,985.97 = 287,988.64 : x - Step 2: Convert to fraction form
529,689.76/730,985.97 = 287,988.64/x - Step 3: Cross multiply
529,689.76x = 730,985.97 × 287,988.64 - Step 4: Simplify right side
529,689.76x = 210,515,655,359.38 - Step 5: Solve for x
x = 210,515,655,359.38/529,689.76 - Step 6: Final answer
x = 397,431.99
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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.