Finding the Fourth Proportional to 5,759,762.79, 7,948,320.88 and 3,181,388.21
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Solution
The fourth proportional to 5,759,762.79, 7,948,320.88 and 3,181,388.21 is: 4,390,231.89
Step by Step Solution
- Step 1: Write the proportion equation
5,759,762.79 : 7,948,320.88 = 3,181,388.21 : x - Step 2: Convert to fraction form
5,759,762.79/7,948,320.88 = 3,181,388.21/x - Step 3: Cross multiply
5,759,762.79x = 7,948,320.88 × 3,181,388.21 - Step 4: Simplify right side
5,759,762.79x = 25,286,694,297,187.22 - Step 5: Solve for x
x = 25,286,694,297,187.22/5,759,762.79 - Step 6: Final answer
x = 4,390,231.89
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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.