Finding the Fourth Proportional to 561,221.12, 774,456.96 and 306,525.44
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Solution
The fourth proportional to 561,221.12, 774,456.96 and 306,525.44 is: 422,989.71
Step by Step Solution
- Step 1: Write the proportion equation
561,221.12 : 774,456.96 = 306,525.44 : x - Step 2: Convert to fraction form
561,221.12/774,456.96 = 306,525.44/x - Step 3: Cross multiply
561,221.12x = 774,456.96 × 306,525.44 - Step 4: Simplify right side
561,221.12x = 237,390,760,425.06 - Step 5: Solve for x
x = 237,390,760,425.06/561,221.12 - Step 6: Final answer
x = 422,989.71
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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.