Finding the Fourth Proportional to 6,139,922.23, 8,470,478.77 and 4,505,489.65
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Solution
The fourth proportional to 6,139,922.23, 8,470,478.77 and 4,505,489.65 is: 6,215,657.63
Step by Step Solution
- Step 1: Write the proportion equation
6,139,922.23 : 8,470,478.77 = 4,505,489.65 : x - Step 2: Convert to fraction form
6,139,922.23/8,470,478.77 = 4,505,489.65/x - Step 3: Cross multiply
6,139,922.23x = 8,470,478.77 × 4,505,489.65 - Step 4: Simplify right side
6,139,922.23x = 38,163,654,428,779.73 - Step 5: Solve for x
x = 38,163,654,428,779.73/6,139,922.23 - Step 6: Final answer
x = 6,215,657.63
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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.