Finding the Fourth Proportional to 775,128.86, 1,069,690.26 and 426,283.05
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Solution
The fourth proportional to 775,128.86, 1,069,690.26 and 426,283.05 is: 588,277.45
Step by Step Solution
- Step 1: Write the proportion equation
775,128.86 : 1,069,690.26 = 426,283.05 : x - Step 2: Convert to fraction form
775,128.86/1,069,690.26 = 426,283.05/x - Step 3: Cross multiply
775,128.86x = 1,069,690.26 × 426,283.05 - Step 4: Simplify right side
775,128.86x = 455,990,824,989.53 - Step 5: Solve for x
x = 455,990,824,989.53/775,128.86 - Step 6: Final answer
x = 588,277.45
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1.5x scale
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.