Finding the Fourth Proportional to 721,885.26, 996,203.55 and 399,617.58
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Solution
The fourth proportional to 721,885.26, 996,203.55 and 399,617.58 is: 551,473.31
Step by Step Solution
- Step 1: Write the proportion equation
721,885.26 : 996,203.55 = 399,617.58 : x - Step 2: Convert to fraction form
721,885.26/996,203.55 = 399,617.58/x - Step 3: Cross multiply
721,885.26x = 996,203.55 × 399,617.58 - Step 4: Simplify right side
721,885.26x = 398,100,451,838.41 - Step 5: Solve for x
x = 398,100,451,838.41/721,885.26 - Step 6: Final answer
x = 551,473.31
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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.