Finding the Fourth Proportional to 2,628,420.12, 3,942,035.64 and 1,207,109.88
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Solution
The fourth proportional to 2,628,420.12, 3,942,035.64 and 1,207,109.88 is: 1,810,391.78
Step by Step Solution
- Step 1: Write the proportion equation
2,628,420.12 : 3,942,035.64 = 1,207,109.88 : x - Step 2: Convert to fraction form
2,628,420.12/3,942,035.64 = 1,207,109.88/x - Step 3: Cross multiply
2,628,420.12x = 3,942,035.64 × 1,207,109.88 - Step 4: Simplify right side
2,628,420.12x = 4,758,470,168,356.12 - Step 5: Solve for x
x = 4,758,470,168,356.12/2,628,420.12 - Step 6: Final answer
x = 1,810,391.78
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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.