Finding the Fourth Proportional to 2,178,669.36, 3,006,520.60 and 1,211,778.84
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Solution
The fourth proportional to 2,178,669.36, 3,006,520.60 and 1,211,778.84 is: 1,672,230.82
Step by Step Solution
- Step 1: Write the proportion equation
2,178,669.36 : 3,006,520.60 = 1,211,778.84 : x - Step 2: Convert to fraction form
2,178,669.36/3,006,520.60 = 1,211,778.84/x - Step 3: Cross multiply
2,178,669.36x = 3,006,520.60 × 1,211,778.84 - Step 4: Simplify right side
2,178,669.36x = 3,643,238,045,104.10 - Step 5: Solve for x
x = 3,643,238,045,104.10/2,178,669.36 - Step 6: Final answer
x = 1,672,230.82
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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.