Finding the Fourth Proportional to 711,901.15, 982,423.98 and 389,611.06
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Solution
The fourth proportional to 711,901.15, 982,423.98 and 389,611.06 is: 537,663.48
Step by Step Solution
- Step 1: Write the proportion equation
711,901.15 : 982,423.98 = 389,611.06 : x - Step 2: Convert to fraction form
711,901.15/982,423.98 = 389,611.06/x - Step 3: Cross multiply
711,901.15x = 982,423.98 × 389,611.06 - Step 4: Simplify right side
711,901.15x = 382,763,248,217.22 - Step 5: Solve for x
x = 382,763,248,217.22/711,901.15 - Step 6: Final answer
x = 537,663.48
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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.