Finding the Fourth Proportional to 638,472.24, 881,124.28 and 351,991.64
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Solution
The fourth proportional to 638,472.24, 881,124.28 and 351,991.64 is: 485,766.43
Step by Step Solution
- Step 1: Write the proportion equation
638,472.24 : 881,124.28 = 351,991.64 : x - Step 2: Convert to fraction form
638,472.24/881,124.28 = 351,991.64/x - Step 3: Cross multiply
638,472.24x = 881,124.28 × 351,991.64 - Step 4: Simplify right side
638,472.24x = 310,148,381,683.85 - Step 5: Solve for x
x = 310,148,381,683.85/638,472.24 - Step 6: Final answer
x = 485,766.43
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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.