Finding the Fourth Proportional to 519,219.44, 716,847.20 and 398,128.08
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Solution
The fourth proportional to 519,219.44, 716,847.20 and 398,128.08 is: 549,665.47
Step by Step Solution
- Step 1: Write the proportion equation
519,219.44 : 716,847.20 = 398,128.08 : x - Step 2: Convert to fraction form
519,219.44/716,847.20 = 398,128.08/x - Step 3: Cross multiply
519,219.44x = 716,847.20 × 398,128.08 - Step 4: Simplify right side
519,219.44x = 285,396,999,389.38 - Step 5: Solve for x
x = 285,396,999,389.38/519,219.44 - Step 6: Final answer
x = 549,665.47
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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.