Finding the Fourth Proportional to 711,495.08, 981,886.64 and 389,197.82
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Solution
The fourth proportional to 711,495.08, 981,886.64 and 389,197.82 is: 537,105.81
Step by Step Solution
- Step 1: Write the proportion equation
711,495.08 : 981,886.64 = 389,197.82 : x - Step 2: Convert to fraction form
711,495.08/981,886.64 = 389,197.82/x - Step 3: Cross multiply
711,495.08x = 981,886.64 × 389,197.82 - Step 4: Simplify right side
711,495.08x = 382,148,139,775.13 - Step 5: Solve for x
x = 382,148,139,775.13/711,495.08 - Step 6: Final answer
x = 537,105.81
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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.