Finding the Fourth Proportional to 856,687.19, 1,285,143.98 and 316,869.98
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Solution
The fourth proportional to 856,687.19, 1,285,143.98 and 316,869.98 is: 475,346.83
Step by Step Solution
- Step 1: Write the proportion equation
856,687.19 : 1,285,143.98 = 316,869.98 : x - Step 2: Convert to fraction form
856,687.19/1,285,143.98 = 316,869.98/x - Step 3: Cross multiply
856,687.19x = 1,285,143.98 × 316,869.98 - Step 4: Simplify right side
856,687.19x = 407,223,539,229.65 - Step 5: Solve for x
x = 407,223,539,229.65/856,687.19 - Step 6: Final answer
x = 475,346.83
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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.