Finding the Fourth Proportional to 2,129,143.80, 3,193,715.70 and 1,289,335.80
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Solution
The fourth proportional to 2,129,143.80, 3,193,715.70 and 1,289,335.80 is: 1,934,003.70
Step by Step Solution
- Step 1: Write the proportion equation
2,129,143.80 : 3,193,715.70 = 1,289,335.80 : x - Step 2: Convert to fraction form
2,129,143.80/3,193,715.70 = 1,289,335.80/x - Step 3: Cross multiply
2,129,143.80x = 3,193,715.70 × 1,289,335.80 - Step 4: Simplify right side
2,129,143.80x = 4,117,771,987,032.06 - Step 5: Solve for x
x = 4,117,771,987,032.06/2,129,143.80 - Step 6: Final answer
x = 1,934,003.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.