Finding the Fourth Proportional to 920,512.80, 1,270,321.92 and 518,104.80
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Solution
The fourth proportional to 920,512.80, 1,270,321.92 and 518,104.80 is: 714,992.65
Step by Step Solution
- Step 1: Write the proportion equation
920,512.80 : 1,270,321.92 = 518,104.80 : x - Step 2: Convert to fraction form
920,512.80/1,270,321.92 = 518,104.80/x - Step 3: Cross multiply
920,512.80x = 1,270,321.92 × 518,104.80 - Step 4: Simplify right side
920,512.80x = 658,159,884,297.22 - Step 5: Solve for x
x = 658,159,884,297.22/920,512.80 - Step 6: Final answer
x = 714,992.65
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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.