Finding the Fourth Proportional to 981,405.12, 1,472,107.56 and 316,557.12
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Solution
The fourth proportional to 981,405.12, 1,472,107.56 and 316,557.12 is: 474,835.64
Step by Step Solution
- Step 1: Write the proportion equation
981,405.12 : 1,472,107.56 = 316,557.12 : x - Step 2: Convert to fraction form
981,405.12/1,472,107.56 = 316,557.12/x - Step 3: Cross multiply
981,405.12x = 1,472,107.56 × 316,557.12 - Step 4: Simplify right side
981,405.12x = 466,006,129,523.83 - Step 5: Solve for x
x = 466,006,129,523.83/981,405.12 - Step 6: Final answer
x = 474,835.64
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1.5x scale
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.