Finding the Fourth Proportional to 427,112.68, 588,687.66 and 390,913.62
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Solution
The fourth proportional to 427,112.68, 588,687.66 and 390,913.62 is: 538,794.64
Step by Step Solution
- Step 1: Write the proportion equation
427,112.68 : 588,687.66 = 390,913.62 : x - Step 2: Convert to fraction form
427,112.68/588,687.66 = 390,913.62/x - Step 3: Cross multiply
427,112.68x = 588,687.66 × 390,913.62 - Step 4: Simplify right side
427,112.68x = 230,126,024,219.93 - Step 5: Solve for x
x = 230,126,024,219.93/427,112.68 - Step 6: Final answer
x = 538,794.64
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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.