Finding the Fourth Proportional to 3,121,419.20, 4,307,908.08 and 1,763,379.68
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Solution
The fourth proportional to 3,121,419.20, 4,307,908.08 and 1,763,379.68 is: 2,433,661.45
Step by Step Solution
- Step 1: Write the proportion equation
3,121,419.20 : 4,307,908.08 = 1,763,379.68 : x - Step 2: Convert to fraction form
3,121,419.20/4,307,908.08 = 1,763,379.68/x - Step 3: Cross multiply
3,121,419.20x = 4,307,908.08 × 1,763,379.68 - Step 4: Simplify right side
3,121,419.20x = 7,596,477,571,579.82 - Step 5: Solve for x
x = 7,596,477,571,579.82/3,121,419.20 - Step 6: Final answer
x = 2,433,661.45
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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.