Finding the Fourth Proportional to 6,438,780.18, 8,876,637.92 and 5,136,453.12
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Solution
The fourth proportional to 6,438,780.18, 8,876,637.92 and 5,136,453.12 is: 7,081,222.42
Step by Step Solution
- Step 1: Write the proportion equation
6,438,780.18 : 8,876,637.92 = 5,136,453.12 : x - Step 2: Convert to fraction form
6,438,780.18/8,876,637.92 = 5,136,453.12/x - Step 3: Cross multiply
6,438,780.18x = 8,876,637.92 × 5,136,453.12 - Step 4: Simplify right side
6,438,780.18x = 45,594,434,539,294.31 - Step 5: Solve for x
x = 45,594,434,539,294.31/6,438,780.18 - Step 6: Final answer
x = 7,081,222.42
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1.5x scale
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.