Finding the Fourth Proportional to 663,286.78, 915,368.20 and 372,989.70
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Solution
The fourth proportional to 663,286.78, 915,368.20 and 372,989.70 is: 514,744.03
Step by Step Solution
- Step 1: Write the proportion equation
663,286.78 : 915,368.20 = 372,989.70 : x - Step 2: Convert to fraction form
663,286.78/915,368.20 = 372,989.70/x - Step 3: Cross multiply
663,286.78x = 915,368.20 × 372,989.70 - Step 4: Simplify right side
663,286.78x = 341,422,910,307.54 - Step 5: Solve for x
x = 341,422,910,307.54/663,286.78 - Step 6: Final answer
x = 514,744.03
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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.