Finding the Fourth Proportional to 642,253.79, 886,310.09 and 351,875.65
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Solution
The fourth proportional to 642,253.79, 886,310.09 and 351,875.65 is: 485,588.33
Step by Step Solution
- Step 1: Write the proportion equation
642,253.79 : 886,310.09 = 351,875.65 : x - Step 2: Convert to fraction form
642,253.79/886,310.09 = 351,875.65/x - Step 3: Cross multiply
642,253.79x = 886,310.09 × 351,875.65 - Step 4: Simplify right side
642,253.79x = 311,870,939,688.35 - Step 5: Solve for x
x = 311,870,939,688.35/642,253.79 - Step 6: Final answer
x = 485,588.33
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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.