Finding the Fourth Proportional to 647,121.20, 970,681.80 and 332,193.20
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Solution
The fourth proportional to 647,121.20, 970,681.80 and 332,193.20 is: 498,289.80
Step by Step Solution
- Step 1: Write the proportion equation
647,121.20 : 970,681.80 = 332,193.20 : x - Step 2: Convert to fraction form
647,121.20/970,681.80 = 332,193.20/x - Step 3: Cross multiply
647,121.20x = 970,681.80 × 332,193.20 - Step 4: Simplify right side
647,121.20x = 322,453,893,323.76 - Step 5: Solve for x
x = 322,453,893,323.76/647,121.20 - Step 6: Final answer
x = 498,289.80
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Double scale
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Similar ratio
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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.