Finding the Fourth Proportional to 862,155.19, 1,189,773.33 and 499,789.09
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Solution
The fourth proportional to 862,155.19, 1,189,773.33 and 499,789.09 is: 689,708.46
Step by Step Solution
- Step 1: Write the proportion equation
862,155.19 : 1,189,773.33 = 499,789.09 : x - Step 2: Convert to fraction form
862,155.19/1,189,773.33 = 499,789.09/x - Step 3: Cross multiply
862,155.19x = 1,189,773.33 × 499,789.09 - Step 4: Simplify right side
862,155.19x = 594,635,729,906.97 - Step 5: Solve for x
x = 594,635,729,906.97/862,155.19 - Step 6: Final answer
x = 689,708.46
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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.