Finding the Fourth Proportional to 746,911.20, 1,119,135.60 and 430,816.80
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Solution
The fourth proportional to 746,911.20, 1,119,135.60 and 430,816.80 is: 645,515.05
Step by Step Solution
- Step 1: Write the proportion equation
746,911.20 : 1,119,135.60 = 430,816.80 : x - Step 2: Convert to fraction form
746,911.20/1,119,135.60 = 430,816.80/x - Step 3: Cross multiply
746,911.20x = 1,119,135.60 × 430,816.80 - Step 4: Simplify right side
746,911.20x = 482,142,417,958.08 - Step 5: Solve for x
x = 482,142,417,958.08/746,911.20 - Step 6: Final answer
x = 645,515.05
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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.