Finding the Fourth Proportional to 721,320.21, 994,684.73 and 479,642.13
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Solution
The fourth proportional to 721,320.21, 994,684.73 and 479,642.13 is: 661,415.96
Step by Step Solution
- Step 1: Write the proportion equation
721,320.21 : 994,684.73 = 479,642.13 : x - Step 2: Convert to fraction form
721,320.21/994,684.73 = 479,642.13/x - Step 3: Cross multiply
721,320.21x = 994,684.73 × 479,642.13 - Step 4: Simplify right side
721,320.21x = 477,092,700,177.46 - Step 5: Solve for x
x = 477,092,700,177.46/721,320.21 - Step 6: Final answer
x = 661,415.96
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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.