Finding the Fourth Proportional to 878,268.75, 1,212,011.69 and 475,860.75
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Solution
The fourth proportional to 878,268.75, 1,212,011.69 and 475,860.75 is: 656,688.28
Step by Step Solution
- Step 1: Write the proportion equation
878,268.75 : 1,212,011.69 = 475,860.75 : x - Step 2: Convert to fraction form
878,268.75/1,212,011.69 = 475,860.75/x - Step 3: Cross multiply
878,268.75x = 1,212,011.69 × 475,860.75 - Step 4: Simplify right side
878,268.75x = 576,748,791,812.17 - Step 5: Solve for x
x = 576,748,791,812.17/878,268.75 - Step 6: Final answer
x = 656,688.28
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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.