Finding the Fourth Proportional to 711,543.79, 981,938.18 and 389,246.97
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Solution
The fourth proportional to 711,543.79, 981,938.18 and 389,246.97 is: 537,165.06
Step by Step Solution
- Step 1: Write the proportion equation
711,543.79 : 981,938.18 = 389,246.97 : x - Step 2: Convert to fraction form
711,543.79/981,938.18 = 389,246.97/x - Step 3: Cross multiply
711,543.79x = 981,938.18 × 389,246.97 - Step 4: Simplify right side
711,543.79x = 382,216,462,751.99 - Step 5: Solve for x
x = 382,216,462,751.99/711,543.79 - Step 6: Final answer
x = 537,165.06
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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.