Finding the Fourth Proportional to 478,913.91, 660,906.36 and 261,120.79
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Solution
The fourth proportional to 478,913.91, 660,906.36 and 261,120.79 is: 360,349.51
Step by Step Solution
- Step 1: Write the proportion equation
478,913.91 : 660,906.36 = 261,120.79 : x - Step 2: Convert to fraction form
478,913.91/660,906.36 = 261,120.79/x - Step 3: Cross multiply
478,913.91x = 660,906.36 × 261,120.79 - Step 4: Simplify right side
478,913.91x = 172,576,390,839.22 - Step 5: Solve for x
x = 172,576,390,839.22/478,913.91 - Step 6: Final answer
x = 360,349.51
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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.