Finding the Fourth Proportional to 711,740.92, 982,160.10 and 389,386.84
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Solution
The fourth proportional to 711,740.92, 982,160.10 and 389,386.84 is: 537,330.66
Step by Step Solution
- Step 1: Write the proportion equation
711,740.92 : 982,160.10 = 389,386.84 : x - Step 2: Convert to fraction form
711,740.92/982,160.10 = 389,386.84/x - Step 3: Cross multiply
711,740.92x = 982,160.10 × 389,386.84 - Step 4: Simplify right side
711,740.92x = 382,440,217,713.08 - Step 5: Solve for x
x = 382,440,217,713.08/711,740.92 - Step 6: Final answer
x = 537,330.66
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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.