Finding the Fourth Proportional to 1,330,236.10, 1,995,354.15 and 768,981.70
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Solution
The fourth proportional to 1,330,236.10, 1,995,354.15 and 768,981.70 is: 1,153,472.55
Step by Step Solution
- Step 1: Write the proportion equation
1,330,236.10 : 1,995,354.15 = 768,981.70 : x - Step 2: Convert to fraction form
1,330,236.10/1,995,354.15 = 768,981.70/x - Step 3: Cross multiply
1,330,236.10x = 1,995,354.15 × 768,981.70 - Step 4: Simplify right side
1,330,236.10x = 1,534,390,826,369.06 - Step 5: Solve for x
x = 1,534,390,826,369.06/1,330,236.10 - Step 6: Final answer
x = 1,153,472.55
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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.