Finding the Fourth Proportional to 1,405,056.92, 1,939,013.99 and 861,492.42
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Solution
The fourth proportional to 1,405,056.92, 1,939,013.99 and 861,492.42 is: 1,188,881.27
Step by Step Solution
- Step 1: Write the proportion equation
1,405,056.92 : 1,939,013.99 = 861,492.42 : x - Step 2: Convert to fraction form
1,405,056.92/1,939,013.99 = 861,492.42/x - Step 3: Cross multiply
1,405,056.92x = 1,939,013.99 × 861,492.42 - Step 4: Simplify right side
1,405,056.92x = 1,670,445,850,351.49 - Step 5: Solve for x
x = 1,670,445,850,351.49/1,405,056.92 - Step 6: Final answer
x = 1,188,881.27
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.