Finding the Fourth Proportional to 4,988,442.20, 6,884,286.48 and 2,812,938.63
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Solution
The fourth proportional to 4,988,442.20, 6,884,286.48 and 2,812,938.63 is: 3,881,988.52
Step by Step Solution
- Step 1: Write the proportion equation
4,988,442.20 : 6,884,286.48 = 2,812,938.63 : x - Step 2: Convert to fraction form
4,988,442.20/6,884,286.48 = 2,812,938.63/x - Step 3: Cross multiply
4,988,442.20x = 6,884,286.48 × 2,812,938.63 - Step 4: Simplify right side
4,988,442.20x = 19,365,075,365,514.03 - Step 5: Solve for x
x = 19,365,075,365,514.03/4,988,442.20 - Step 6: Final answer
x = 3,881,988.52
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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.