Finding the Fourth Proportional to 2,116,033.68, 2,921,020.08 and 1,428,636.70
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Solution
The fourth proportional to 2,116,033.68, 2,921,020.08 and 1,428,636.70 is: 1,972,121.96
Step by Step Solution
- Step 1: Write the proportion equation
2,116,033.68 : 2,921,020.08 = 1,428,636.70 : x - Step 2: Convert to fraction form
2,116,033.68/2,921,020.08 = 1,428,636.70/x - Step 3: Cross multiply
2,116,033.68x = 2,921,020.08 × 1,428,636.70 - Step 4: Simplify right side
2,116,033.68x = 4,173,076,487,724.94 - Step 5: Solve for x
x = 4,173,076,487,724.94/2,116,033.68 - Step 6: Final answer
x = 1,972,121.96
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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.