Finding the Fourth Proportional to 1,638,219.70, 2,457,329.55 and 839,235.70
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Solution
The fourth proportional to 1,638,219.70, 2,457,329.55 and 839,235.70 is: 1,258,853.55
Step by Step Solution
- Step 1: Write the proportion equation
1,638,219.70 : 2,457,329.55 = 839,235.70 : x - Step 2: Convert to fraction form
1,638,219.70/2,457,329.55 = 839,235.70/x - Step 3: Cross multiply
1,638,219.70x = 2,457,329.55 × 839,235.70 - Step 4: Simplify right side
1,638,219.70x = 2,062,278,685,024.93 - Step 5: Solve for x
x = 2,062,278,685,024.93/1,638,219.70 - Step 6: Final answer
x = 1,258,853.55
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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.