Finding the Fourth Proportional to 634,943.68, 876,495.58 and 389,968.12
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Solution
The fourth proportional to 634,943.68, 876,495.58 and 389,968.12 is: 538,323.86
Step by Step Solution
- Step 1: Write the proportion equation
634,943.68 : 876,495.58 = 389,968.12 : x - Step 2: Convert to fraction form
634,943.68/876,495.58 = 389,968.12/x - Step 3: Cross multiply
634,943.68x = 876,495.58 × 389,968.12 - Step 4: Simplify right side
634,943.68x = 341,805,333,520.91 - Step 5: Solve for x
x = 341,805,333,520.91/634,943.68 - Step 6: Final answer
x = 538,323.86
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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.