Finding the Fourth Proportional to 639,133.78, 882,023.08 and 352,672.32
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Solution
The fourth proportional to 639,133.78, 882,023.08 and 352,672.32 is: 486,697.99
Step by Step Solution
- Step 1: Write the proportion equation
639,133.78 : 882,023.08 = 352,672.32 : x - Step 2: Convert to fraction form
639,133.78/882,023.08 = 352,672.32/x - Step 3: Cross multiply
639,133.78x = 882,023.08 × 352,672.32 - Step 4: Simplify right side
639,133.78x = 311,065,125,917.15 - Step 5: Solve for x
x = 311,065,125,917.15/639,133.78 - Step 6: Final answer
x = 486,697.99
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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.