Finding the Fourth Proportional to 611,713.12, 917,578.91 and 212,366.59
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Solution
The fourth proportional to 611,713.12, 917,578.91 and 212,366.59 is: 318,553.09
Step by Step Solution
- Step 1: Write the proportion equation
611,713.12 : 917,578.91 = 212,366.59 : x - Step 2: Convert to fraction form
611,713.12/917,578.91 = 212,366.59/x - Step 3: Cross multiply
611,713.12x = 917,578.91 × 212,366.59 - Step 4: Simplify right side
611,713.12x = 194,863,104,172.62 - Step 5: Solve for x
x = 194,863,104,172.62/611,713.12 - Step 6: Final answer
x = 318,553.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.