Finding the Fourth Proportional to 1,292,816.95, 1,939,220.13 and 394,256.05
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Solution
The fourth proportional to 1,292,816.95, 1,939,220.13 and 394,256.05 is: 591,382.46
Step by Step Solution
- Step 1: Write the proportion equation
1,292,816.95 : 1,939,220.13 = 394,256.05 : x - Step 2: Convert to fraction form
1,292,816.95/1,939,220.13 = 394,256.05/x - Step 3: Cross multiply
1,292,816.95x = 1,939,220.13 × 394,256.05 - Step 4: Simplify right side
1,292,816.95x = 764,549,268,534.29 - Step 5: Solve for x
x = 764,549,268,534.29/1,292,816.95 - Step 6: Final answer
x = 591,382.46
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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.