Finding the Fourth Proportional to 853,702.21, 1,280,378.35 and 313,772.41
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Solution
The fourth proportional to 853,702.21, 1,280,378.35 and 313,772.41 is: 470,594.31
Step by Step Solution
- Step 1: Write the proportion equation
853,702.21 : 1,280,378.35 = 313,772.41 : x - Step 2: Convert to fraction form
853,702.21/1,280,378.35 = 313,772.41/x - Step 3: Cross multiply
853,702.21x = 1,280,378.35 × 313,772.41 - Step 4: Simplify right side
853,702.21x = 401,747,400,591.32 - Step 5: Solve for x
x = 401,747,400,591.32/853,702.21 - Step 6: Final answer
x = 470,594.31
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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.