Finding the Fourth Proportional to 5,478,317.12, 8,213,021.76 and 2,285,821.28
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Solution
The fourth proportional to 5,478,317.12, 8,213,021.76 and 2,285,821.28 is: 3,426,873.53
Step by Step Solution
- Step 1: Write the proportion equation
5,478,317.12 : 8,213,021.76 = 2,285,821.28 : x - Step 2: Convert to fraction form
5,478,317.12/8,213,021.76 = 2,285,821.28/x - Step 3: Cross multiply
5,478,317.12x = 8,213,021.76 × 2,285,821.28 - Step 4: Simplify right side
5,478,317.12x = 18,773,499,912,111.05 - Step 5: Solve for x
x = 18,773,499,912,111.05/5,478,317.12 - Step 6: Final answer
x = 3,426,873.53
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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.