Finding the Fourth Proportional to 423,126.99, 634,749.75 and 123,629.49
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Solution
The fourth proportional to 423,126.99, 634,749.75 and 123,629.49 is: 185,461.55
Step by Step Solution
- Step 1: Write the proportion equation
423,126.99 : 634,749.75 = 123,629.49 : x - Step 2: Convert to fraction form
423,126.99/634,749.75 = 123,629.49/x - Step 3: Cross multiply
423,126.99x = 634,749.75 × 123,629.49 - Step 4: Simplify right side
423,126.99x = 78,473,787,870.13 - Step 5: Solve for x
x = 78,473,787,870.13/423,126.99 - Step 6: Final answer
x = 185,461.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.