Finding the Fourth Proportional to 759,913.28, 1,048,711.20 and 420,375.68
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Solution
The fourth proportional to 759,913.28, 1,048,711.20 and 420,375.68 is: 580,135.52
Step by Step Solution
- Step 1: Write the proportion equation
759,913.28 : 1,048,711.20 = 420,375.68 : x - Step 2: Convert to fraction form
759,913.28/1,048,711.20 = 420,375.68/x - Step 3: Cross multiply
759,913.28x = 1,048,711.20 × 420,375.68 - Step 4: Simplify right side
759,913.28x = 440,852,683,823.62 - Step 5: Solve for x
x = 440,852,683,823.62/759,913.28 - Step 6: Final answer
x = 580,135.52
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.