Finding the Fourth Proportional to 1,312,405.20, 1,811,354.04 and 768,509.24
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Solution
The fourth proportional to 1,312,405.20, 1,811,354.04 and 768,509.24 is: 1,060,680.27
Step by Step Solution
- Step 1: Write the proportion equation
1,312,405.20 : 1,811,354.04 = 768,509.24 : x - Step 2: Convert to fraction form
1,312,405.20/1,811,354.04 = 768,509.24/x - Step 3: Cross multiply
1,312,405.20x = 1,811,354.04 × 768,509.24 - Step 4: Simplify right side
1,312,405.20x = 1,392,042,307,594.56 - Step 5: Solve for x
x = 1,392,042,307,594.56/1,312,405.20 - Step 6: Final answer
x = 1,060,680.27
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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.