Finding the Fourth Proportional to 7,419,153.40, 11,128,730.10 and 6,686,945.80
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Solution
The fourth proportional to 7,419,153.40, 11,128,730.10 and 6,686,945.80 is: 10,030,418.70
Step by Step Solution
- Step 1: Write the proportion equation
7,419,153.40 : 11,128,730.10 = 6,686,945.80 : x - Step 2: Convert to fraction form
7,419,153.40/11,128,730.10 = 6,686,945.80/x - Step 3: Cross multiply
7,419,153.40x = 11,128,730.10 × 6,686,945.80 - Step 4: Simplify right side
7,419,153.40x = 74,417,215,001,528.58 - Step 5: Solve for x
x = 74,417,215,001,528.58/7,419,153.40 - Step 6: Final answer
x = 10,030,418.70
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1.5x scale
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.