Finding the Fourth Proportional to 917,687.80, 1,376,531.70 and 664,433.20
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Solution
The fourth proportional to 917,687.80, 1,376,531.70 and 664,433.20 is: 996,649.80
Step by Step Solution
- Step 1: Write the proportion equation
917,687.80 : 1,376,531.70 = 664,433.20 : x - Step 2: Convert to fraction form
917,687.80/1,376,531.70 = 664,433.20/x - Step 3: Cross multiply
917,687.80x = 1,376,531.70 × 664,433.20 - Step 4: Simplify right side
917,687.80x = 914,613,362,332.44 - Step 5: Solve for x
x = 914,613,362,332.44/917,687.80 - Step 6: Final answer
x = 996,649.80
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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.