Finding the Fourth Proportional to 1,820,872.80, 2,512,804.65 and 1,005,076.70
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Solution
The fourth proportional to 1,820,872.80, 2,512,804.65 and 1,005,076.70 is: 1,387,005.95
Step by Step Solution
- Step 1: Write the proportion equation
1,820,872.80 : 2,512,804.65 = 1,005,076.70 : x - Step 2: Convert to fraction form
1,820,872.80/2,512,804.65 = 1,005,076.70/x - Step 3: Cross multiply
1,820,872.80x = 2,512,804.65 × 1,005,076.70 - Step 4: Simplify right side
1,820,872.80x = 2,525,561,405,366.65 - Step 5: Solve for x
x = 2,525,561,405,366.65/1,820,872.80 - Step 6: Final answer
x = 1,387,005.95
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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.