Finding the Fourth Proportional to 1,990,862.10, 2,747,622.95 and 1,131,551.53
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Solution
The fourth proportional to 1,990,862.10, 2,747,622.95 and 1,131,551.53 is: 1,561,673.69
Step by Step Solution
- Step 1: Write the proportion equation
1,990,862.10 : 2,747,622.95 = 1,131,551.53 : x - Step 2: Convert to fraction form
1,990,862.10/2,747,622.95 = 1,131,551.53/x - Step 3: Cross multiply
1,990,862.10x = 2,747,622.95 × 1,131,551.53 - Step 4: Simplify right side
1,990,862.10x = 3,109,076,952,935.61 - Step 5: Solve for x
x = 3,109,076,952,935.61/1,990,862.10 - Step 6: Final answer
x = 1,561,673.69
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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.