Finding the Fourth Proportional to 640,100.48, 883,303.18 and 398,375.42
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Solution
The fourth proportional to 640,100.48, 883,303.18 and 398,375.42 is: 549,735.99
Step by Step Solution
- Step 1: Write the proportion equation
640,100.48 : 883,303.18 = 398,375.42 : x - Step 2: Convert to fraction form
640,100.48/883,303.18 = 398,375.42/x - Step 3: Cross multiply
640,100.48x = 883,303.18 × 398,375.42 - Step 4: Simplify right side
640,100.48x = 351,886,269,907.38 - Step 5: Solve for x
x = 351,886,269,907.38/640,100.48 - Step 6: Final answer
x = 549,735.99
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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.