Finding the Fourth Proportional to 553,843.14, 764,348.46 and 312,142.08
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Solution
The fourth proportional to 553,843.14, 764,348.46 and 312,142.08 is: 430,781.39
Step by Step Solution
- Step 1: Write the proportion equation
553,843.14 : 764,348.46 = 312,142.08 : x - Step 2: Convert to fraction form
553,843.14/764,348.46 = 312,142.08/x - Step 3: Cross multiply
553,843.14x = 764,348.46 × 312,142.08 - Step 4: Simplify right side
553,843.14x = 238,585,318,149.20 - Step 5: Solve for x
x = 238,585,318,149.20/553,843.14 - Step 6: Final answer
x = 430,781.39
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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.