Finding the Fourth Proportional to 681,623.64, 940,644.36 and 395,313.48
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Solution
The fourth proportional to 681,623.64, 940,644.36 and 395,313.48 is: 545,534.77
Step by Step Solution
- Step 1: Write the proportion equation
681,623.64 : 940,644.36 = 395,313.48 : x - Step 2: Convert to fraction form
681,623.64/940,644.36 = 395,313.48/x - Step 3: Cross multiply
681,623.64x = 940,644.36 × 395,313.48 - Step 4: Simplify right side
681,623.64x = 371,849,395,393.97 - Step 5: Solve for x
x = 371,849,395,393.97/681,623.64 - Step 6: Final answer
x = 545,534.77
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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.