Finding the Fourth Proportional to 406,918.08, 561,612.96 and 388,977.12
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Solution
The fourth proportional to 406,918.08, 561,612.96 and 388,977.12 is: 536,851.52
Step by Step Solution
- Step 1: Write the proportion equation
406,918.08 : 561,612.96 = 388,977.12 : x - Step 2: Convert to fraction form
406,918.08/561,612.96 = 388,977.12/x - Step 3: Cross multiply
406,918.08x = 561,612.96 × 388,977.12 - Step 4: Simplify right side
406,918.08x = 218,454,591,735.48 - Step 5: Solve for x
x = 218,454,591,735.48/406,918.08 - Step 6: Final answer
x = 536,851.52
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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.