Finding the Fourth Proportional to 748,879.80, 1,123,319.70 and 328,975.80
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Solution
The fourth proportional to 748,879.80, 1,123,319.70 and 328,975.80 is: 493,463.70
Step by Step Solution
- Step 1: Write the proportion equation
748,879.80 : 1,123,319.70 = 328,975.80 : x - Step 2: Convert to fraction form
748,879.80/1,123,319.70 = 328,975.80/x - Step 3: Cross multiply
748,879.80x = 1,123,319.70 × 328,975.80 - Step 4: Simplify right side
748,879.80x = 369,544,996,963.26 - Step 5: Solve for x
x = 369,544,996,963.26/748,879.80 - Step 6: Final answer
x = 493,463.70
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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.