Finding the Fourth Proportional to 419,324.13, 578,691.65 and 315,772.94
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Solution
The fourth proportional to 419,324.13, 578,691.65 and 315,772.94 is: 435,784.99
Step by Step Solution
- Step 1: Write the proportion equation
419,324.13 : 578,691.65 = 315,772.94 : x - Step 2: Convert to fraction form
419,324.13/578,691.65 = 315,772.94/x - Step 3: Cross multiply
419,324.13x = 578,691.65 × 315,772.94 - Step 4: Simplify right side
419,324.13x = 182,735,163,541.82 - Step 5: Solve for x
x = 182,735,163,541.82/419,324.13 - Step 6: Final answer
x = 435,784.99
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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.