Finding the Fourth Proportional to 808,660.80, 1,213,989.60 and 509,140.80
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Solution
The fourth proportional to 808,660.80, 1,213,989.60 and 509,140.80 is: 764,339.80
Step by Step Solution
- Step 1: Write the proportion equation
808,660.80 : 1,213,989.60 = 509,140.80 : x - Step 2: Convert to fraction form
808,660.80/1,213,989.60 = 509,140.80/x - Step 3: Cross multiply
808,660.80x = 1,213,989.60 × 509,140.80 - Step 4: Simplify right side
808,660.80x = 618,091,636,135.68 - Step 5: Solve for x
x = 618,091,636,135.68/808,660.80 - Step 6: Final answer
x = 764,339.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.