Finding the Fourth Proportional to 3,819,987.28, 5,272,331.28 and 2,189,487.46
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Solution
The fourth proportional to 3,819,987.28, 5,272,331.28 and 2,189,487.46 is: 3,021,921.90
Step by Step Solution
- Step 1: Write the proportion equation
3,819,987.28 : 5,272,331.28 = 2,189,487.46 : x - Step 2: Convert to fraction form
3,819,987.28/5,272,331.28 = 2,189,487.46/x - Step 3: Cross multiply
3,819,987.28x = 5,272,331.28 × 2,189,487.46 - Step 4: Simplify right side
3,819,987.28x = 11,543,703,222,525.75 - Step 5: Solve for x
x = 11,543,703,222,525.75/3,819,987.28 - Step 6: Final answer
x = 3,021,921.90
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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.