Finding the Fourth Proportional to 1,988,873.40, 2,744,572.71 and 1,215,798.99
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Solution
The fourth proportional to 1,988,873.40, 2,744,572.71 and 1,215,798.99 is: 1,677,758.24
Step by Step Solution
- Step 1: Write the proportion equation
1,988,873.40 : 2,744,572.71 = 1,215,798.99 : x - Step 2: Convert to fraction form
1,988,873.40/2,744,572.71 = 1,215,798.99/x - Step 3: Cross multiply
1,988,873.40x = 2,744,572.71 × 1,215,798.99 - Step 4: Simplify right side
1,988,873.40x = 3,336,848,728,799.56 - Step 5: Solve for x
x = 3,336,848,728,799.56/1,988,873.40 - Step 6: Final answer
x = 1,677,758.24
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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.