Finding the Fourth Proportional to 1,247,900.40, 1,872,057.60 and 438,074.88
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Solution
The fourth proportional to 1,247,900.40, 1,872,057.60 and 438,074.88 is: 657,184.99
Step by Step Solution
- Step 1: Write the proportion equation
1,247,900.40 : 1,872,057.60 = 438,074.88 : x - Step 2: Convert to fraction form
1,247,900.40/1,872,057.60 = 438,074.88/x - Step 3: Cross multiply
1,247,900.40x = 1,872,057.60 × 438,074.88 - Step 4: Simplify right side
1,247,900.40x = 820,101,408,473.09 - Step 5: Solve for x
x = 820,101,408,473.09/1,247,900.40 - Step 6: Final answer
x = 657,184.99
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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.