Finding the Fourth Proportional to 561,129.70, 774,358.98 and 306,481.49
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Solution
The fourth proportional to 561,129.70, 774,358.98 and 306,481.49 is: 422,944.45
Step by Step Solution
- Step 1: Write the proportion equation
561,129.70 : 774,358.98 = 306,481.49 : x - Step 2: Convert to fraction form
561,129.70/774,358.98 = 306,481.49/x - Step 3: Cross multiply
561,129.70x = 774,358.98 × 306,481.49 - Step 4: Simplify right side
561,129.70x = 237,326,693,985.28 - Step 5: Solve for x
x = 237,326,693,985.28/561,129.70 - Step 6: Final answer
x = 422,944.45
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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.