Finding the Fourth Proportional to 643,048.99, 964,774.26 and 387,162.09
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Solution
The fourth proportional to 643,048.99, 964,774.26 and 387,162.09 is: 580,864.02
Step by Step Solution
- Step 1: Write the proportion equation
643,048.99 : 964,774.26 = 387,162.09 : x - Step 2: Convert to fraction form
643,048.99/964,774.26 = 387,162.09/x - Step 3: Cross multiply
643,048.99x = 964,774.26 × 387,162.09 - Step 4: Simplify right side
643,048.99x = 373,524,018,879.80 - Step 5: Solve for x
x = 373,524,018,879.80/643,048.99 - Step 6: Final answer
x = 580,864.02
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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.