Finding the Fourth Proportional to 7,438,753.70, 11,162,435.34 and 3,120,417.12
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Solution
The fourth proportional to 7,438,753.70, 11,162,435.34 and 3,120,417.12 is: 4,682,431.46
Step by Step Solution
- Step 1: Write the proportion equation
7,438,753.70 : 11,162,435.34 = 3,120,417.12 : x - Step 2: Convert to fraction form
7,438,753.70/11,162,435.34 = 3,120,417.12/x - Step 3: Cross multiply
7,438,753.70x = 11,162,435.34 × 3,120,417.12 - Step 4: Simplify right side
7,438,753.70x = 34,831,454,335,829.02 - Step 5: Solve for x
x = 34,831,454,335,829.02/7,438,753.70 - Step 6: Final answer
x = 4,682,431.46
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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.