Finding the Fourth Proportional to 7,655,820.60, 11,471,921.10 and 6,640,177.80
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Solution
The fourth proportional to 7,655,820.60, 11,471,921.10 and 6,640,177.80 is: 9,950,023.62
Step by Step Solution
- Step 1: Write the proportion equation
7,655,820.60 : 11,471,921.10 = 6,640,177.80 : x - Step 2: Convert to fraction form
7,655,820.60/11,471,921.10 = 6,640,177.80/x - Step 3: Cross multiply
7,655,820.60x = 11,471,921.10 × 6,640,177.80 - Step 4: Simplify right side
7,655,820.60x = 76,175,595,811,571.58 - Step 5: Solve for x
x = 76,175,595,811,571.58/7,655,820.60 - Step 6: Final answer
x = 9,950,023.62
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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.