Finding the Fourth Proportional to 639,947.43, 883,122.21 and 349,559.19
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Solution
The fourth proportional to 639,947.43, 883,122.21 and 349,559.19 is: 482,388.82
Step by Step Solution
- Step 1: Write the proportion equation
639,947.43 : 883,122.21 = 349,559.19 : x - Step 2: Convert to fraction form
639,947.43/883,122.21 = 349,559.19/x - Step 3: Cross multiply
639,947.43x = 883,122.21 × 349,559.19 - Step 4: Simplify right side
639,947.43x = 308,703,484,398.61 - Step 5: Solve for x
x = 308,703,484,398.61/639,947.43 - Step 6: Final answer
x = 482,388.82
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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.