Finding the Fourth Proportional to 405,023.58, 558,513.86 and 347,852.21
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Solution
The fourth proportional to 405,023.58, 558,513.86 and 347,852.21 is: 479,676.46
Step by Step Solution
- Step 1: Write the proportion equation
405,023.58 : 558,513.86 = 347,852.21 : x - Step 2: Convert to fraction form
405,023.58/558,513.86 = 347,852.21/x - Step 3: Cross multiply
405,023.58x = 558,513.86 × 347,852.21 - Step 4: Simplify right side
405,023.58x = 194,280,275,984.80 - Step 5: Solve for x
x = 194,280,275,984.80/405,023.58 - Step 6: Final answer
x = 479,676.46
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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.