Finding the Fourth Proportional to 721,879.63, 996,181.80 and 399,582.79
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Solution
The fourth proportional to 721,879.63, 996,181.80 and 399,582.79 is: 551,417.55
Step by Step Solution
- Step 1: Write the proportion equation
721,879.63 : 996,181.80 = 399,582.79 : x - Step 2: Convert to fraction form
721,879.63/996,181.80 = 399,582.79/x - Step 3: Cross multiply
721,879.63x = 996,181.80 × 399,582.79 - Step 4: Simplify right side
721,879.63x = 398,057,099,002.33 - Step 5: Solve for x
x = 398,057,099,002.33/721,879.63 - Step 6: Final answer
x = 551,417.55
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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.