Finding the Fourth Proportional to 3,927,918.08, 5,420,086.40 and 2,209,001.60
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Solution
The fourth proportional to 3,927,918.08, 5,420,086.40 and 2,209,001.60 is: 3,048,174.45
Step by Step Solution
- Step 1: Write the proportion equation
3,927,918.08 : 5,420,086.40 = 2,209,001.60 : x - Step 2: Convert to fraction form
3,927,918.08/5,420,086.40 = 2,209,001.60/x - Step 3: Cross multiply
3,927,918.08x = 5,420,086.40 × 2,209,001.60 - Step 4: Simplify right side
3,927,918.08x = 11,972,979,529,738.24 - Step 5: Solve for x
x = 11,972,979,529,738.24/3,927,918.08 - Step 6: Final answer
x = 3,048,174.45
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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.