Finding the Fourth Proportional to 394,062.04, 543,616.84 and 378,784.63
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Solution
The fourth proportional to 394,062.04, 543,616.84 and 378,784.63 is: 522,541.33
Step by Step Solution
- Step 1: Write the proportion equation
394,062.04 : 543,616.84 = 378,784.63 : x - Step 2: Convert to fraction form
394,062.04/543,616.84 = 378,784.63/x - Step 3: Cross multiply
394,062.04x = 543,616.84 × 378,784.63 - Step 4: Simplify right side
394,062.04x = 205,913,703,601.17 - Step 5: Solve for x
x = 205,913,703,601.17/394,062.04 - Step 6: Final answer
x = 522,541.33
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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.