Finding the Fourth Proportional to 1,312,405.70, 1,811,354.73 and 768,509.74
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Solution
The fourth proportional to 1,312,405.70, 1,811,354.73 and 768,509.74 is: 1,060,680.96
Step by Step Solution
- Step 1: Write the proportion equation
1,312,405.70 : 1,811,354.73 = 768,509.74 : x - Step 2: Convert to fraction form
1,312,405.70/1,811,354.73 = 768,509.74/x - Step 3: Cross multiply
1,312,405.70x = 1,811,354.73 × 768,509.74 - Step 4: Simplify right side
1,312,405.70x = 1,392,043,743,543.30 - Step 5: Solve for x
x = 1,392,043,743,543.30/1,312,405.70 - Step 6: Final answer
x = 1,060,680.96
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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.