Finding the Fourth Proportional to 438,324.70, 657,487.05 and 432,419.80
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Solution
The fourth proportional to 438,324.70, 657,487.05 and 432,419.80 is: 648,629.70
Step by Step Solution
- Step 1: Write the proportion equation
438,324.70 : 657,487.05 = 432,419.80 : x - Step 2: Convert to fraction form
438,324.70/657,487.05 = 432,419.80/x - Step 3: Cross multiply
438,324.70x = 657,487.05 × 432,419.80 - Step 4: Simplify right side
438,324.70x = 284,310,418,663.59 - Step 5: Solve for x
x = 284,310,418,663.59/438,324.70 - Step 6: Final answer
x = 648,629.70
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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.