Finding the Fourth Proportional to 862,813.30, 1,294,207.80 and 389,497.90
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Solution
The fourth proportional to 862,813.30, 1,294,207.80 and 389,497.90 is: 584,241.37
Step by Step Solution
- Step 1: Write the proportion equation
862,813.30 : 1,294,207.80 = 389,497.90 : x - Step 2: Convert to fraction form
862,813.30/1,294,207.80 = 389,497.90/x - Step 3: Cross multiply
862,813.30x = 1,294,207.80 × 389,497.90 - Step 4: Simplify right side
862,813.30x = 504,091,220,263.62 - Step 5: Solve for x
x = 504,091,220,263.62/862,813.30 - Step 6: Final answer
x = 584,241.37
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.