Finding the Fourth Proportional to 862,203.17, 1,189,840.71 and 499,837.09
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Solution
The fourth proportional to 862,203.17, 1,189,840.71 and 499,837.09 is: 689,775.38
Step by Step Solution
- Step 1: Write the proportion equation
862,203.17 : 1,189,840.71 = 499,837.09 : x - Step 2: Convert to fraction form
862,203.17/1,189,840.71 = 499,837.09/x - Step 3: Cross multiply
862,203.17x = 1,189,840.71 × 499,837.09 - Step 4: Simplify right side
862,203.17x = 594,726,515,550.75 - Step 5: Solve for x
x = 594,726,515,550.75/862,203.17 - Step 6: Final answer
x = 689,775.38
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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.