Finding the Fourth Proportional to 979,135.60, 1,351,218 and 543,582.40
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Solution
The fourth proportional to 979,135.60, 1,351,218 and 543,582.40 is: 750,149.75
Step by Step Solution
- Step 1: Write the proportion equation
979,135.60 : 1,351,218 = 543,582.40 : x - Step 2: Convert to fraction form
979,135.60/1,351,218 = 543,582.40/x - Step 3: Cross multiply
979,135.60x = 1,351,218 × 543,582.40 - Step 4: Simplify right side
979,135.60x = 734,498,323,363.20 - Step 5: Solve for x
x = 734,498,323,363.20/979,135.60 - Step 6: Final answer
x = 750,149.75
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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.