Finding the Fourth Proportional to 985,580.19, 1,478,370.49 and 346,385.70
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Solution
The fourth proportional to 985,580.19, 1,478,370.49 and 346,385.70 is: 519,578.62
Step by Step Solution
- Step 1: Write the proportion equation
985,580.19 : 1,478,370.49 = 346,385.70 : x - Step 2: Convert to fraction form
985,580.19/1,478,370.49 = 346,385.70/x - Step 3: Cross multiply
985,580.19x = 1,478,370.49 × 346,385.70 - Step 4: Simplify right side
985,580.19x = 512,086,396,172.03 - Step 5: Solve for x
x = 512,086,396,172.03/985,580.19 - Step 6: Final answer
x = 519,578.62
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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.