Finding the Fourth Proportional to 2,153,699.82, 2,972,125.71 and 1,186,864.80
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Solution
The fourth proportional to 2,153,699.82, 2,972,125.71 and 1,186,864.80 is: 1,637,884.42
Step by Step Solution
- Step 1: Write the proportion equation
2,153,699.82 : 2,972,125.71 = 1,186,864.80 : x - Step 2: Convert to fraction form
2,153,699.82/2,972,125.71 = 1,186,864.80/x - Step 3: Cross multiply
2,153,699.82x = 2,972,125.71 × 1,186,864.80 - Step 4: Simplify right side
2,153,699.82x = 3,527,511,386,374.01 - Step 5: Solve for x
x = 3,527,511,386,374.01/2,153,699.82 - Step 6: Final answer
x = 1,637,884.42
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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.