Finding the Fourth Proportional to 2,121,424.40, 2,927,874.20 and 1,191,236.57
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Solution
The fourth proportional to 2,121,424.40, 2,927,874.20 and 1,191,236.57 is: 1,644,079.71
Step by Step Solution
- Step 1: Write the proportion equation
2,121,424.40 : 2,927,874.20 = 1,191,236.57 : x - Step 2: Convert to fraction form
2,121,424.40/2,927,874.20 = 1,191,236.57/x - Step 3: Cross multiply
2,121,424.40x = 2,927,874.20 × 1,191,236.57 - Step 4: Simplify right side
2,121,424.40x = 3,487,790,798,803.94 - Step 5: Solve for x
x = 3,487,790,798,803.94/2,121,424.40 - Step 6: Final answer
x = 1,644,079.71
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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.