Finding the Fourth Proportional to 478,672.84, 660,786.80 and 340,940.44
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Solution
The fourth proportional to 478,672.84, 660,786.80 and 340,940.44 is: 470,653.28
Step by Step Solution
- Step 1: Write the proportion equation
478,672.84 : 660,786.80 = 340,940.44 : x - Step 2: Convert to fraction form
478,672.84/660,786.80 = 340,940.44/x - Step 3: Cross multiply
478,672.84x = 660,786.80 × 340,940.44 - Step 4: Simplify right side
478,672.84x = 225,288,942,338.19 - Step 5: Solve for x
x = 225,288,942,338.19/478,672.84 - Step 6: Final answer
x = 470,653.28
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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.