Finding the Fourth Proportional to 664,139.11, 916,582.58 and 406,166.98
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Solution
The fourth proportional to 664,139.11, 916,582.58 and 406,166.98 is: 560,553.61
Step by Step Solution
- Step 1: Write the proportion equation
664,139.11 : 916,582.58 = 406,166.98 : x - Step 2: Convert to fraction form
664,139.11/916,582.58 = 406,166.98/x - Step 3: Cross multiply
664,139.11x = 916,582.58 × 406,166.98 - Step 4: Simplify right side
664,139.11x = 372,285,571,825.46 - Step 5: Solve for x
x = 372,285,571,825.46/664,139.11 - Step 6: Final answer
x = 560,553.61
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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.