Finding the Fourth Proportional to 431,509.68, 643,969.44 and 384,270.48
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Solution
The fourth proportional to 431,509.68, 643,969.44 and 384,270.48 is: 573,471.37
Step by Step Solution
- Step 1: Write the proportion equation
431,509.68 : 643,969.44 = 384,270.48 : x - Step 2: Convert to fraction form
431,509.68/643,969.44 = 384,270.48/x - Step 3: Cross multiply
431,509.68x = 643,969.44 × 384,270.48 - Step 4: Simplify right side
431,509.68x = 247,458,445,814.13 - Step 5: Solve for x
x = 247,458,445,814.13/431,509.68 - Step 6: Final answer
x = 573,471.37
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.