Finding the Fourth Proportional to 1,393,651.05, 1,921,202.79 and 985,031.97
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Solution
The fourth proportional to 1,393,651.05, 1,921,202.79 and 985,031.97 is: 1,357,905.32
Step by Step Solution
- Step 1: Write the proportion equation
1,393,651.05 : 1,921,202.79 = 985,031.97 : x - Step 2: Convert to fraction form
1,393,651.05/1,921,202.79 = 985,031.97/x - Step 3: Cross multiply
1,393,651.05x = 1,921,202.79 × 985,031.97 - Step 4: Simplify right side
1,393,651.05x = 1,892,446,169,003.20 - Step 5: Solve for x
x = 1,892,446,169,003.20/1,393,651.05 - Step 6: Final answer
x = 1,357,905.32
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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.