Finding the Fourth Proportional to 5,078,965.74, 7,009,174.80 and 2,787,208.44
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Solution
The fourth proportional to 5,078,965.74, 7,009,174.80 and 2,787,208.44 is: 3,846,458.54
Step by Step Solution
- Step 1: Write the proportion equation
5,078,965.74 : 7,009,174.80 = 2,787,208.44 : x - Step 2: Convert to fraction form
5,078,965.74/7,009,174.80 = 2,787,208.44/x - Step 3: Cross multiply
5,078,965.74x = 7,009,174.80 × 2,787,208.44 - Step 4: Simplify right side
5,078,965.74x = 19,536,031,159,995.31 - Step 5: Solve for x
x = 19,536,031,159,995.31/5,078,965.74 - Step 6: Final answer
x = 3,846,458.54
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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.