Finding the Fourth Proportional to 413,386.17, 620,079.01 and 129,101.05
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Solution
The fourth proportional to 413,386.17, 620,079.01 and 129,101.05 is: 193,651.50
Step by Step Solution
- Step 1: Write the proportion equation
413,386.17 : 620,079.01 = 129,101.05 : x - Step 2: Convert to fraction form
413,386.17/620,079.01 = 129,101.05/x - Step 3: Cross multiply
413,386.17x = 620,079.01 × 129,101.05 - Step 4: Simplify right side
413,386.17x = 80,052,851,726.31 - Step 5: Solve for x
x = 80,052,851,726.31/413,386.17 - Step 6: Final answer
x = 193,651.50
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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.