Finding the Fourth Proportional to 518,409.36, 715,420.08 and 303,529.32
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Solution
The fourth proportional to 518,409.36, 715,420.08 and 303,529.32 is: 418,879.34
Step by Step Solution
- Step 1: Write the proportion equation
518,409.36 : 715,420.08 = 303,529.32 : x - Step 2: Convert to fraction form
518,409.36/715,420.08 = 303,529.32/x - Step 3: Cross multiply
518,409.36x = 715,420.08 × 303,529.32 - Step 4: Simplify right side
518,409.36x = 217,150,970,396.75 - Step 5: Solve for x
x = 217,150,970,396.75/518,409.36 - Step 6: Final answer
x = 418,879.34
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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.