Finding the Fourth Proportional to 862,101.28, 1,189,699.79 and 480,128.05
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Solution
The fourth proportional to 862,101.28, 1,189,699.79 and 480,128.05 is: 662,576.72
Step by Step Solution
- Step 1: Write the proportion equation
862,101.28 : 1,189,699.79 = 480,128.05 : x - Step 2: Convert to fraction form
862,101.28/1,189,699.79 = 480,128.05/x - Step 3: Cross multiply
862,101.28x = 1,189,699.79 × 480,128.05 - Step 4: Simplify right side
862,101.28x = 571,208,240,258.11 - Step 5: Solve for x
x = 571,208,240,258.11/862,101.28 - Step 6: Final answer
x = 662,576.72
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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.