Finding the Fourth Proportional to 862,651.80, 1,293,977.70 and 489,403.80
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Solution
The fourth proportional to 862,651.80, 1,293,977.70 and 489,403.80 is: 734,105.70
Step by Step Solution
- Step 1: Write the proportion equation
862,651.80 : 1,293,977.70 = 489,403.80 : x - Step 2: Convert to fraction form
862,651.80/1,293,977.70 = 489,403.80/x - Step 3: Cross multiply
862,651.80x = 1,293,977.70 × 489,403.80 - Step 4: Simplify right side
862,651.80x = 633,277,603,495.26 - Step 5: Solve for x
x = 633,277,603,495.26/862,651.80 - Step 6: Final answer
x = 734,105.70
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1.5x scale
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.