Finding the Fourth Proportional to 519,553.26, 717,478.66 and 491,248.20
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Solution
The fourth proportional to 519,553.26, 717,478.66 and 491,248.20 is: 678,390.70
Step by Step Solution
- Step 1: Write the proportion equation
519,553.26 : 717,478.66 = 491,248.20 : x - Step 2: Convert to fraction form
519,553.26/717,478.66 = 491,248.20/x - Step 3: Cross multiply
519,553.26x = 717,478.66 × 491,248.20 - Step 4: Simplify right side
519,553.26x = 352,460,100,263.41 - Step 5: Solve for x
x = 352,460,100,263.41/519,553.26 - Step 6: Final answer
x = 678,390.70
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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.