Finding the Fourth Proportional to 717,238.58, 989,789.24 and 394,947.92
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Solution
The fourth proportional to 717,238.58, 989,789.24 and 394,947.92 is: 545,028.12
Step by Step Solution
- Step 1: Write the proportion equation
717,238.58 : 989,789.24 = 394,947.92 : x - Step 2: Convert to fraction form
717,238.58/989,789.24 = 394,947.92/x - Step 3: Cross multiply
717,238.58x = 989,789.24 × 394,947.92 - Step 4: Simplify right side
717,238.58x = 390,915,197,614.80 - Step 5: Solve for x
x = 390,915,197,614.80/717,238.58 - Step 6: Final answer
x = 545,028.12
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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.