Finding the Fourth Proportional to 1,529,415.20, 2,109,732.18 and 917,405.12
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Solution
The fourth proportional to 1,529,415.20, 2,109,732.18 and 917,405.12 is: 1,265,502.72
Step by Step Solution
- Step 1: Write the proportion equation
1,529,415.20 : 2,109,732.18 = 917,405.12 : x - Step 2: Convert to fraction form
1,529,415.20/2,109,732.18 = 917,405.12/x - Step 3: Cross multiply
1,529,415.20x = 2,109,732.18 × 917,405.12 - Step 4: Simplify right side
1,529,415.20x = 1,935,479,105,594.82 - Step 5: Solve for x
x = 1,935,479,105,594.82/1,529,415.20 - Step 6: Final answer
x = 1,265,502.72
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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.