Finding the Fourth Proportional to 711,655.88, 982,109.63 and 389,365.97
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Solution
The fourth proportional to 711,655.88, 982,109.63 and 389,365.97 is: 537,338.45
Step by Step Solution
- Step 1: Write the proportion equation
711,655.88 : 982,109.63 = 389,365.97 : x - Step 2: Convert to fraction form
711,655.88/982,109.63 = 389,365.97/x - Step 3: Cross multiply
711,655.88x = 982,109.63 × 389,365.97 - Step 4: Simplify right side
711,655.88x = 382,400,066,784.46 - Step 5: Solve for x
x = 382,400,066,784.46/711,655.88 - Step 6: Final answer
x = 537,338.45
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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.