Finding the Fourth Proportional to 5,416,763.40, 8,127,218.70 and 5,331,745.80
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Solution
The fourth proportional to 5,416,763.40, 8,127,218.70 and 5,331,745.80 is: 7,999,659.75
Step by Step Solution
- Step 1: Write the proportion equation
5,416,763.40 : 8,127,218.70 = 5,331,745.80 : x - Step 2: Convert to fraction form
5,416,763.40/8,127,218.70 = 5,331,745.80/x - Step 3: Cross multiply
5,416,763.40x = 8,127,218.70 × 5,331,745.80 - Step 4: Simplify right side
5,416,763.40x = 43,332,264,169,406.46 - Step 5: Solve for x
x = 43,332,264,169,406.46/5,416,763.40 - Step 6: Final answer
x = 7,999,659.75
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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.