Finding the Fourth Proportional to 809,124.75, 1,213,745.45 and 310,488.75
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Solution
The fourth proportional to 809,124.75, 1,213,745.45 and 310,488.75 is: 465,755.50
Step by Step Solution
- Step 1: Write the proportion equation
809,124.75 : 1,213,745.45 = 310,488.75 : x - Step 2: Convert to fraction form
809,124.75/1,213,745.45 = 310,488.75/x - Step 3: Cross multiply
809,124.75x = 1,213,745.45 × 310,488.75 - Step 4: Simplify right side
809,124.75x = 376,854,306,036.24 - Step 5: Solve for x
x = 376,854,306,036.24/809,124.75 - Step 6: Final answer
x = 465,755.50
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1.5x scale
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.