Finding the Fourth Proportional to 1,212,536.72, 1,818,811.12 and 313,915.44
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Solution
The fourth proportional to 1,212,536.72, 1,818,811.12 and 313,915.44 is: 470,874.72
Step by Step Solution
- Step 1: Write the proportion equation
1,212,536.72 : 1,818,811.12 = 313,915.44 : x - Step 2: Convert to fraction form
1,212,536.72/1,818,811.12 = 313,915.44/x - Step 3: Cross multiply
1,212,536.72x = 1,818,811.12 × 313,915.44 - Step 4: Simplify right side
1,212,536.72x = 570,952,893,011.69 - Step 5: Solve for x
x = 570,952,893,011.69/1,212,536.72 - Step 6: Final answer
x = 470,874.72
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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.