Finding the Fourth Proportional to 515,588.62, 711,597.80 and 300,728.68
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Solution
The fourth proportional to 515,588.62, 711,597.80 and 300,728.68 is: 415,055.45
Step by Step Solution
- Step 1: Write the proportion equation
515,588.62 : 711,597.80 = 300,728.68 : x - Step 2: Convert to fraction form
515,588.62/711,597.80 = 300,728.68/x - Step 3: Cross multiply
515,588.62x = 711,597.80 × 300,728.68 - Step 4: Simplify right side
515,588.62x = 213,997,867,084.90 - Step 5: Solve for x
x = 213,997,867,084.90/515,588.62 - Step 6: Final answer
x = 415,055.45
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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.