Finding the Fourth Proportional to 620,139.68, 855,886.34 and 378,562.88
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Solution
The fourth proportional to 620,139.68, 855,886.34 and 378,562.88 is: 522,473.90
Step by Step Solution
- Step 1: Write the proportion equation
620,139.68 : 855,886.34 = 378,562.88 : x - Step 2: Convert to fraction form
620,139.68/855,886.34 = 378,562.88/x - Step 3: Cross multiply
620,139.68x = 855,886.34 × 378,562.88 - Step 4: Simplify right side
620,139.68x = 324,006,797,823.06 - Step 5: Solve for x
x = 324,006,797,823.06/620,139.68 - Step 6: Final answer
x = 522,473.90
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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.