Finding the Fourth Proportional to 3,623,995.20, 5,431,327.20 and 2,778,355.20
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Solution
The fourth proportional to 3,623,995.20, 5,431,327.20 and 2,778,355.20 is: 4,163,955.89
Step by Step Solution
- Step 1: Write the proportion equation
3,623,995.20 : 5,431,327.20 = 2,778,355.20 : x - Step 2: Convert to fraction form
3,623,995.20/5,431,327.20 = 2,778,355.20/x - Step 3: Cross multiply
3,623,995.20x = 5,431,327.20 × 2,778,355.20 - Step 4: Simplify right side
3,623,995.20x = 15,090,156,169,021.44 - Step 5: Solve for x
x = 15,090,156,169,021.44/3,623,995.20 - Step 6: Final answer
x = 4,163,955.89
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.