Finding the Fourth Proportional to 521,657.18, 720,133.40 and 349,687.56
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Solution
The fourth proportional to 521,657.18, 720,133.40 and 349,687.56 is: 482,734.07
Step by Step Solution
- Step 1: Write the proportion equation
521,657.18 : 720,133.40 = 349,687.56 : x - Step 2: Convert to fraction form
521,657.18/720,133.40 = 349,687.56/x - Step 3: Cross multiply
521,657.18x = 720,133.40 × 349,687.56 - Step 4: Simplify right side
521,657.18x = 251,821,695,095.22 - Step 5: Solve for x
x = 251,821,695,095.22/521,657.18 - Step 6: Final answer
x = 482,734.07
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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.