Finding the Fourth Proportional to 1,188,799.74, 1,783,257.93 and 478,731.87
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Solution
The fourth proportional to 1,188,799.74, 1,783,257.93 and 478,731.87 is: 718,121.29
Step by Step Solution
- Step 1: Write the proportion equation
1,188,799.74 : 1,783,257.93 = 478,731.87 : x - Step 2: Convert to fraction form
1,188,799.74/1,783,257.93 = 478,731.87/x - Step 3: Cross multiply
1,188,799.74x = 1,783,257.93 × 478,731.87 - Step 4: Simplify right side
1,188,799.74x = 853,702,403,521.23 - Step 5: Solve for x
x = 853,702,403,521.23/1,188,799.74 - Step 6: Final answer
x = 718,121.29
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.