Finding the Fourth Proportional to 782,390.80, 1,173,586.18 and 427,211.07
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Solution
The fourth proportional to 782,390.80, 1,173,586.18 and 427,211.07 is: 640,816.59
Step by Step Solution
- Step 1: Write the proportion equation
782,390.80 : 1,173,586.18 = 427,211.07 : x - Step 2: Convert to fraction form
782,390.80/1,173,586.18 = 427,211.07/x - Step 3: Cross multiply
782,390.80x = 1,173,586.18 × 427,211.07 - Step 4: Simplify right side
782,390.80x = 501,369,007,695.01 - Step 5: Solve for x
x = 501,369,007,695.01/782,390.80 - Step 6: Final answer
x = 640,816.59
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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.