Finding the Fourth Proportional to 399,664.80, 599,497.20 and 310,435.20
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Solution
The fourth proportional to 399,664.80, 599,497.20 and 310,435.20 is: 465,652.80
Step by Step Solution
- Step 1: Write the proportion equation
399,664.80 : 599,497.20 = 310,435.20 : x - Step 2: Convert to fraction form
399,664.80/599,497.20 = 310,435.20/x - Step 3: Cross multiply
399,664.80x = 599,497.20 × 310,435.20 - Step 4: Simplify right side
399,664.80x = 186,105,033,181.44 - Step 5: Solve for x
x = 186,105,033,181.44/399,664.80 - Step 6: Final answer
x = 465,652.80
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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.