Finding the Fourth Proportional to 402,471.80, 603,707.70 and 386,919.80
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Solution
The fourth proportional to 402,471.80, 603,707.70 and 386,919.80 is: 580,379.70
Step by Step Solution
- Step 1: Write the proportion equation
402,471.80 : 603,707.70 = 386,919.80 : x - Step 2: Convert to fraction form
402,471.80/603,707.70 = 386,919.80/x - Step 3: Cross multiply
402,471.80x = 603,707.70 × 386,919.80 - Step 4: Simplify right side
402,471.80x = 233,586,462,542.46 - Step 5: Solve for x
x = 233,586,462,542.46/402,471.80 - Step 6: Final answer
x = 580,379.70
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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.