Finding the Fourth Proportional to 729,437.68, 1,006,791.96 and 427,728.88
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Solution
The fourth proportional to 729,437.68, 1,006,791.96 and 427,728.88 is: 590,364.34
Step by Step Solution
- Step 1: Write the proportion equation
729,437.68 : 1,006,791.96 = 427,728.88 : x - Step 2: Convert to fraction form
729,437.68/1,006,791.96 = 427,728.88/x - Step 3: Cross multiply
729,437.68x = 1,006,791.96 × 427,728.88 - Step 4: Simplify right side
729,437.68x = 430,633,997,443.81 - Step 5: Solve for x
x = 430,633,997,443.81/729,437.68 - Step 6: Final answer
x = 590,364.34
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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.