Finding the Fourth Proportional to 775,128.53, 1,069,689.80 and 426,282.72
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Solution
The fourth proportional to 775,128.53, 1,069,689.80 and 426,282.72 is: 588,276.99
Step by Step Solution
- Step 1: Write the proportion equation
775,128.53 : 1,069,689.80 = 426,282.72 : x - Step 2: Convert to fraction form
775,128.53/1,069,689.80 = 426,282.72/x - Step 3: Cross multiply
775,128.53x = 1,069,689.80 × 426,282.72 - Step 4: Simplify right side
775,128.53x = 455,990,278,565.96 - Step 5: Solve for x
x = 455,990,278,565.96/775,128.53 - Step 6: Final answer
x = 588,276.99
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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.