Finding the Fourth Proportional to 1,512,380.40, 2,087,232.04 and 1,129,742.88
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Solution
The fourth proportional to 1,512,380.40, 2,087,232.04 and 1,129,742.88 is: 1,559,155.05
Step by Step Solution
- Step 1: Write the proportion equation
1,512,380.40 : 2,087,232.04 = 1,129,742.88 : x - Step 2: Convert to fraction form
1,512,380.40/2,087,232.04 = 1,129,742.88/x - Step 3: Cross multiply
1,512,380.40x = 2,087,232.04 × 1,129,742.88 - Step 4: Simplify right side
1,512,380.40x = 2,358,035,536,097.88 - Step 5: Solve for x
x = 2,358,035,536,097.88/1,512,380.40 - Step 6: Final answer
x = 1,559,155.05
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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.