Finding the Fourth Proportional to 540,382.68, 745,679.28 and 310,878.84
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Solution
The fourth proportional to 540,382.68, 745,679.28 and 310,878.84 is: 428,984.71
Step by Step Solution
- Step 1: Write the proportion equation
540,382.68 : 745,679.28 = 310,878.84 : x - Step 2: Convert to fraction form
540,382.68/745,679.28 = 310,878.84/x - Step 3: Cross multiply
540,382.68x = 745,679.28 × 310,878.84 - Step 4: Simplify right side
540,382.68x = 231,815,909,578.44 - Step 5: Solve for x
x = 231,815,909,578.44/540,382.68 - Step 6: Final answer
x = 428,984.71
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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.