Finding the Fourth Proportional to 520,912.80, 780,202.80 and 427,600.80
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Solution
The fourth proportional to 520,912.80, 780,202.80 and 427,600.80 is: 640,443.74
Step by Step Solution
- Step 1: Write the proportion equation
520,912.80 : 780,202.80 = 427,600.80 : x - Step 2: Convert to fraction form
520,912.80/780,202.80 = 427,600.80/x - Step 3: Cross multiply
520,912.80x = 780,202.80 × 427,600.80 - Step 4: Simplify right side
520,912.80x = 333,615,341,442.24 - Step 5: Solve for x
x = 333,615,341,442.24/520,912.80 - Step 6: Final answer
x = 640,443.74
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.