Finding the Fourth Proportional to 3,898,023.84, 5,379,391.44 and 2,179,216.80
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Solution
The fourth proportional to 3,898,023.84, 5,379,391.44 and 2,179,216.80 is: 3,007,385.46
Step by Step Solution
- Step 1: Write the proportion equation
3,898,023.84 : 5,379,391.44 = 2,179,216.80 : x - Step 2: Convert to fraction form
3,898,023.84/5,379,391.44 = 2,179,216.80/x - Step 3: Cross multiply
3,898,023.84x = 5,379,391.44 × 2,179,216.80 - Step 4: Simplify right side
3,898,023.84x = 11,722,860,199,824.19 - Step 5: Solve for x
x = 11,722,860,199,824.19/3,898,023.84 - Step 6: Final answer
x = 3,007,385.46
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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.