Finding the Fourth Proportional to 721,945.47, 996,296.52 and 395,252.99
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Solution
The fourth proportional to 721,945.47, 996,296.52 and 395,252.99 is: 545,455.57
Step by Step Solution
- Step 1: Write the proportion equation
721,945.47 : 996,296.52 = 395,252.99 : x - Step 2: Convert to fraction form
721,945.47/996,296.52 = 395,252.99/x - Step 3: Cross multiply
721,945.47x = 996,296.52 × 395,252.99 - Step 4: Simplify right side
721,945.47x = 393,789,178,456.60 - Step 5: Solve for x
x = 393,789,178,456.60/721,945.47 - Step 6: Final answer
x = 545,455.57
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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.