Finding the Fourth Proportional to 721,946.47, 996,297.90 and 395,253.99
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Solution
The fourth proportional to 721,946.47, 996,297.90 and 395,253.99 is: 545,456.95
Step by Step Solution
- Step 1: Write the proportion equation
721,946.47 : 996,297.90 = 395,253.99 : x - Step 2: Convert to fraction form
721,946.47/996,297.90 = 395,253.99/x - Step 3: Cross multiply
721,946.47x = 996,297.90 × 395,253.99 - Step 4: Simplify right side
721,946.47x = 393,790,720,203.62 - Step 5: Solve for x
x = 393,790,720,203.62/721,946.47 - Step 6: Final answer
x = 545,456.95
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1.5x scale
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.