Finding the Fourth Proportional to 981,723.80, 1,472,585.70 and 509,331.80
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Solution
The fourth proportional to 981,723.80, 1,472,585.70 and 509,331.80 is: 763,997.70
Step by Step Solution
- Step 1: Write the proportion equation
981,723.80 : 1,472,585.70 = 509,331.80 : x - Step 2: Convert to fraction form
981,723.80/1,472,585.70 = 509,331.80/x - Step 3: Cross multiply
981,723.80x = 1,472,585.70 × 509,331.80 - Step 4: Simplify right side
981,723.80x = 750,034,725,235.26 - Step 5: Solve for x
x = 750,034,725,235.26/981,723.80 - Step 6: Final answer
x = 763,997.70
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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.