Finding the Fourth Proportional to 3,179,325.55, 4,387,427.99 and 1,728,990.11
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Solution
The fourth proportional to 3,179,325.55, 4,387,427.99 and 1,728,990.11 is: 2,385,983.90
Step by Step Solution
- Step 1: Write the proportion equation
3,179,325.55 : 4,387,427.99 = 1,728,990.11 : x - Step 2: Convert to fraction form
3,179,325.55/4,387,427.99 = 1,728,990.11/x - Step 3: Cross multiply
3,179,325.55x = 4,387,427.99 × 1,728,990.11 - Step 4: Simplify right side
3,179,325.55x = 7,585,819,572,465.09 - Step 5: Solve for x
x = 7,585,819,572,465.09/3,179,325.55 - Step 6: Final answer
x = 2,385,983.90
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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.