Finding the Fourth Proportional to 878,238.08, 1,211,968.68 and 475,830.08
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Solution
The fourth proportional to 878,238.08, 1,211,968.68 and 475,830.08 is: 656,645.58
Step by Step Solution
- Step 1: Write the proportion equation
878,238.08 : 1,211,968.68 = 475,830.08 : x - Step 2: Convert to fraction form
878,238.08/1,211,968.68 = 475,830.08/x - Step 3: Cross multiply
878,238.08x = 1,211,968.68 × 475,830.08 - Step 4: Simplify right side
878,238.08x = 576,691,153,961.89 - Step 5: Solve for x
x = 576,691,153,961.89/878,238.08 - Step 6: Final answer
x = 656,645.58
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1.5x scale
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.