Finding the Fourth Proportional to 515,393.74, 711,242.67 and 289,037.26
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Solution
The fourth proportional to 515,393.74, 711,242.67 and 289,037.26 is: 398,871.03
Step by Step Solution
- Step 1: Write the proportion equation
515,393.74 : 711,242.67 = 289,037.26 : x - Step 2: Convert to fraction form
515,393.74/711,242.67 = 289,037.26/x - Step 3: Cross multiply
515,393.74x = 711,242.67 × 289,037.26 - Step 4: Simplify right side
515,393.74x = 205,575,632,531.88 - Step 5: Solve for x
x = 205,575,632,531.88/515,393.74 - Step 6: Final answer
x = 398,871.03
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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.