Finding the Fourth Proportional to 752,447.20, 1,128,670.80 and 433,582.60
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Solution
The fourth proportional to 752,447.20, 1,128,670.80 and 433,582.60 is: 650,373.90
Step by Step Solution
- Step 1: Write the proportion equation
752,447.20 : 1,128,670.80 = 433,582.60 : x - Step 2: Convert to fraction form
752,447.20/1,128,670.80 = 433,582.60/x - Step 3: Cross multiply
752,447.20x = 1,128,670.80 × 433,582.60 - Step 4: Simplify right side
752,447.20x = 489,372,020,008.08 - Step 5: Solve for x
x = 489,372,020,008.08/752,447.20 - Step 6: Final answer
x = 650,373.90
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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.