Finding the Fourth Proportional to 658,431.09, 908,708.64 and 371,969.62
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Solution
The fourth proportional to 658,431.09, 908,708.64 and 371,969.62 is: 513,359.74
Step by Step Solution
- Step 1: Write the proportion equation
658,431.09 : 908,708.64 = 371,969.62 : x - Step 2: Convert to fraction form
658,431.09/908,708.64 = 371,969.62/x - Step 3: Cross multiply
658,431.09x = 908,708.64 × 371,969.62 - Step 4: Simplify right side
658,431.09x = 338,012,007,511.52 - Step 5: Solve for x
x = 338,012,007,511.52/658,431.09 - Step 6: Final answer
x = 513,359.74
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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.