Finding the Fourth Proportional to 1,512,378.65, 2,087,229.62 and 1,129,741.13
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Solution
The fourth proportional to 1,512,378.65, 2,087,229.62 and 1,129,741.13 is: 1,559,152.63
Step by Step Solution
- Step 1: Write the proportion equation
1,512,378.65 : 2,087,229.62 = 1,129,741.13 : x - Step 2: Convert to fraction form
1,512,378.65/2,087,229.62 = 1,129,741.13/x - Step 3: Cross multiply
1,512,378.65x = 2,087,229.62 × 1,129,741.13 - Step 4: Simplify right side
1,512,378.65x = 2,358,029,143,819.57 - Step 5: Solve for x
x = 2,358,029,143,819.57/1,512,378.65 - Step 6: Final answer
x = 1,559,152.63
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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.