Finding the Fourth Proportional to 770,828.80, 1,156,243.20 and 272,243.20
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Solution
The fourth proportional to 770,828.80, 1,156,243.20 and 272,243.20 is: 408,364.80
Step by Step Solution
- Step 1: Write the proportion equation
770,828.80 : 1,156,243.20 = 272,243.20 : x - Step 2: Convert to fraction form
770,828.80/1,156,243.20 = 272,243.20/x - Step 3: Cross multiply
770,828.80x = 1,156,243.20 × 272,243.20 - Step 4: Simplify right side
770,828.80x = 314,779,348,746.24 - Step 5: Solve for x
x = 314,779,348,746.24/770,828.80 - Step 6: Final answer
x = 408,364.80
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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.