Finding the Fourth Proportional to 781,971.18, 1,079,122.68 and 437,821.62
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Solution
The fourth proportional to 781,971.18, 1,079,122.68 and 437,821.62 is: 604,195.21
Step by Step Solution
- Step 1: Write the proportion equation
781,971.18 : 1,079,122.68 = 437,821.62 : x - Step 2: Convert to fraction form
781,971.18/1,079,122.68 = 437,821.62/x - Step 3: Cross multiply
781,971.18x = 1,079,122.68 × 437,821.62 - Step 4: Simplify right side
781,971.18x = 472,463,239,936.34 - Step 5: Solve for x
x = 472,463,239,936.34/781,971.18 - Step 6: Final answer
x = 604,195.21
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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.