Finding the Fourth Proportional to 1,638,208.80, 2,457,313.20 and 929,620.80
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Solution
The fourth proportional to 1,638,208.80, 2,457,313.20 and 929,620.80 is: 1,394,431.20
Step by Step Solution
- Step 1: Write the proportion equation
1,638,208.80 : 2,457,313.20 = 929,620.80 : x - Step 2: Convert to fraction form
1,638,208.80/2,457,313.20 = 929,620.80/x - Step 3: Cross multiply
1,638,208.80x = 2,457,313.20 × 929,620.80 - Step 4: Simplify right side
1,638,208.80x = 2,284,369,462,834.56 - Step 5: Solve for x
x = 2,284,369,462,834.56/1,638,208.80 - Step 6: Final answer
x = 1,394,431.20
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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.