Finding the Fourth Proportional to 515,259.63, 711,069.68 and 285,809.44
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Solution
The fourth proportional to 515,259.63, 711,069.68 and 285,809.44 is: 394,423.34
Step by Step Solution
- Step 1: Write the proportion equation
515,259.63 : 711,069.68 = 285,809.44 : x - Step 2: Convert to fraction form
515,259.63/711,069.68 = 285,809.44/x - Step 3: Cross multiply
515,259.63x = 711,069.68 × 285,809.44 - Step 4: Simplify right side
515,259.63x = 203,230,424,906.84 - Step 5: Solve for x
x = 203,230,424,906.84/515,259.63 - Step 6: Final answer
x = 394,423.34
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1.5x scale
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.