Finding the Fourth Proportional to 5,078,969.49, 7,009,179.99 and 2,787,212.19
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Solution
The fourth proportional to 5,078,969.49, 7,009,179.99 and 2,787,212.19 is: 3,846,463.73
Step by Step Solution
- Step 1: Write the proportion equation
5,078,969.49 : 7,009,179.99 = 2,787,212.19 : x - Step 2: Convert to fraction form
5,078,969.49/7,009,179.99 = 2,787,212.19/x - Step 3: Cross multiply
5,078,969.49x = 7,009,179.99 × 2,787,212.19 - Step 4: Simplify right side
5,078,969.49x = 19,536,071,910,032.08 - Step 5: Solve for x
x = 19,536,071,910,032.08/5,078,969.49 - Step 6: Final answer
x = 3,846,463.73
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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.