Finding the Fourth Proportional to 664,335.36, 916,784.64 and 396,057.60
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Solution
The fourth proportional to 664,335.36, 916,784.64 and 396,057.60 is: 546,560.59
Step by Step Solution
- Step 1: Write the proportion equation
664,335.36 : 916,784.64 = 396,057.60 : x - Step 2: Convert to fraction form
664,335.36/916,784.64 = 396,057.60/x - Step 3: Cross multiply
664,335.36x = 916,784.64 × 396,057.60 - Step 4: Simplify right side
664,335.36x = 363,099,524,235.26 - Step 5: Solve for x
x = 363,099,524,235.26/664,335.36 - Step 6: Final answer
x = 546,560.59
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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.