Finding the Fourth Proportional to 862,135.47, 1,189,783.65 and 480,162.26
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Solution
The fourth proportional to 862,135.47, 1,189,783.65 and 480,162.26 is: 662,644.35
Step by Step Solution
- Step 1: Write the proportion equation
862,135.47 : 1,189,783.65 = 480,162.26 : x - Step 2: Convert to fraction form
862,135.47/1,189,783.65 = 480,162.26/x - Step 3: Cross multiply
862,135.47x = 1,189,783.65 × 480,162.26 - Step 4: Simplify right side
862,135.47x = 571,289,200,346.13 - Step 5: Solve for x
x = 571,289,200,346.13/862,135.47 - Step 6: Final answer
x = 662,644.35
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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.