Finding the Fourth Proportional to 870,172.88, 1,305,103.62 and 553,689.68
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Solution
The fourth proportional to 870,172.88, 1,305,103.62 and 553,689.68 is: 830,435.45
Step by Step Solution
- Step 1: Write the proportion equation
870,172.88 : 1,305,103.62 = 553,689.68 : x - Step 2: Convert to fraction form
870,172.88/1,305,103.62 = 553,689.68/x - Step 3: Cross multiply
870,172.88x = 1,305,103.62 × 553,689.68 - Step 4: Simplify right side
870,172.88x = 722,622,405,724.64 - Step 5: Solve for x
x = 722,622,405,724.64/870,172.88 - Step 6: Final answer
x = 830,435.45
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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.