Finding the Fourth Proportional to 985,863.80, 1,479,057.70 and 311,957.08
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Solution
The fourth proportional to 985,863.80, 1,479,057.70 and 311,957.08 is: 468,018.52
Step by Step Solution
- Step 1: Write the proportion equation
985,863.80 : 1,479,057.70 = 311,957.08 : x - Step 2: Convert to fraction form
985,863.80/1,479,057.70 = 311,957.08/x - Step 3: Cross multiply
985,863.80x = 1,479,057.70 × 311,957.08 - Step 4: Simplify right side
985,863.80x = 461,402,521,243.52 - Step 5: Solve for x
x = 461,402,521,243.52/985,863.80 - Step 6: Final answer
x = 468,018.52
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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.