Finding the Fourth Proportional to 438,622,758.80, 657,934,138.20 and 352,529,316.80
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Solution
The fourth proportional to 438,622,758.80, 657,934,138.20 and 352,529,316.80 is: 528,793,975.20
Step by Step Solution
- Step 1: Write the proportion equation
438,622,758.80 : 657,934,138.20 = 352,529,316.80 : x - Step 2: Convert to fraction form
438,622,758.80/657,934,138.20 = 352,529,316.80/x - Step 3: Cross multiply
438,622,758.80x = 657,934,138.20 × 352,529,316.80 - Step 4: Simplify right side
438,622,758.80x = 231,941,072,239,042,816 - Step 5: Solve for x
x = 231,941,072,239,042,816/438,622,758.80 - Step 6: Final answer
x = 528,793,975.20
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.