Finding the Fourth Proportional to 1,581,279.62, 2,182,139.40 and 856,121.45
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Solution
The fourth proportional to 1,581,279.62, 2,182,139.40 and 856,121.45 is: 1,181,433.27
Step by Step Solution
- Step 1: Write the proportion equation
1,581,279.62 : 2,182,139.40 = 856,121.45 : x - Step 2: Convert to fraction form
1,581,279.62/2,182,139.40 = 856,121.45/x - Step 3: Cross multiply
1,581,279.62x = 2,182,139.40 × 856,121.45 - Step 4: Simplify right side
1,581,279.62x = 1,868,176,347,230.13 - Step 5: Solve for x
x = 1,868,176,347,230.13/1,581,279.62 - Step 6: Final answer
x = 1,181,433.27
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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.