Finding the Fourth Proportional to 1,321,389.05, 1,823,468.15 and 717,764.09
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Solution
The fourth proportional to 1,321,389.05, 1,823,468.15 and 717,764.09 is: 990,487.97
Step by Step Solution
- Step 1: Write the proportion equation
1,321,389.05 : 1,823,468.15 = 717,764.09 : x - Step 2: Convert to fraction form
1,321,389.05/1,823,468.15 = 717,764.09/x - Step 3: Cross multiply
1,321,389.05x = 1,823,468.15 × 717,764.09 - Step 4: Simplify right side
1,321,389.05x = 1,308,819,950,005.80 - Step 5: Solve for x
x = 1,308,819,950,005.80/1,321,389.05 - Step 6: Final answer
x = 990,487.97
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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.