Finding the Fourth Proportional to 515,812.74, 711,872.73 and 289,459.14
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Solution
The fourth proportional to 515,812.74, 711,872.73 and 289,459.14 is: 399,482.32
Step by Step Solution
- Step 1: Write the proportion equation
515,812.74 : 711,872.73 = 289,459.14 : x - Step 2: Convert to fraction form
515,812.74/711,872.73 = 289,459.14/x - Step 3: Cross multiply
515,812.74x = 711,872.73 × 289,459.14 - Step 4: Simplify right side
515,812.74x = 206,058,068,215.25 - Step 5: Solve for x
x = 206,058,068,215.25/515,812.74 - Step 6: Final answer
x = 399,482.32
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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.