Finding the Fourth Proportional to 918,668.16, 1,378,317.99 and 413,583.26
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Solution
The fourth proportional to 918,668.16, 1,378,317.99 and 413,583.26 is: 620,517.03
Step by Step Solution
- Step 1: Write the proportion equation
918,668.16 : 1,378,317.99 = 413,583.26 : x - Step 2: Convert to fraction form
918,668.16/1,378,317.99 = 413,583.26/x - Step 3: Cross multiply
918,668.16x = 1,378,317.99 × 413,583.26 - Step 4: Simplify right side
918,668.16x = 570,049,240,729.26 - Step 5: Solve for x
x = 570,049,240,729.26/918,668.16 - Step 6: Final answer
x = 620,517.03
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.