Finding the Fourth Proportional to 1,512,379.40, 2,087,230.66 and 1,129,741.88
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Solution
The fourth proportional to 1,512,379.40, 2,087,230.66 and 1,129,741.88 is: 1,559,153.67
Step by Step Solution
- Step 1: Write the proportion equation
1,512,379.40 : 2,087,230.66 = 1,129,741.88 : x - Step 2: Convert to fraction form
1,512,379.40/2,087,230.66 = 1,129,741.88/x - Step 3: Cross multiply
1,512,379.40x = 2,087,230.66 × 1,129,741.88 - Step 4: Simplify right side
1,512,379.40x = 2,358,031,889,822.04 - Step 5: Solve for x
x = 2,358,031,889,822.04/1,512,379.40 - Step 6: Final answer
x = 1,559,153.67
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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.