Finding the Fourth Proportional to 478,588.50, 660,049.56 and 287,564.99
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Solution
The fourth proportional to 478,588.50, 660,049.56 and 287,564.99 is: 396,597.79
Step by Step Solution
- Step 1: Write the proportion equation
478,588.50 : 660,049.56 = 287,564.99 : x - Step 2: Convert to fraction form
478,588.50/660,049.56 = 287,564.99/x - Step 3: Cross multiply
478,588.50x = 660,049.56 × 287,564.99 - Step 4: Simplify right side
478,588.50x = 189,807,141,820.66 - Step 5: Solve for x
x = 189,807,141,820.66/478,588.50 - Step 6: Final answer
x = 396,597.79
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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.