Finding the Fourth Proportional to 659,172.70, 987,628.99 and 442,625.53
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Solution
The fourth proportional to 659,172.70, 987,628.99 and 442,625.53 is: 663,179.47
Step by Step Solution
- Step 1: Write the proportion equation
659,172.70 : 987,628.99 = 442,625.53 : x - Step 2: Convert to fraction form
659,172.70/987,628.99 = 442,625.53/x - Step 3: Cross multiply
659,172.70x = 987,628.99 × 442,625.53 - Step 4: Simplify right side
659,172.70x = 437,149,804,496.67 - Step 5: Solve for x
x = 437,149,804,496.67/659,172.70 - Step 6: Final answer
x = 663,179.47
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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.