Finding the Fourth Proportional to 7,720,913.96, 10,656,138.54 and 4,284,262.16
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Solution
The fourth proportional to 7,720,913.96, 10,656,138.54 and 4,284,262.16 is: 5,912,990.53
Step by Step Solution
- Step 1: Write the proportion equation
7,720,913.96 : 10,656,138.54 = 4,284,262.16 : x - Step 2: Convert to fraction form
7,720,913.96/10,656,138.54 = 4,284,262.16/x - Step 3: Cross multiply
7,720,913.96x = 10,656,138.54 × 4,284,262.16 - Step 4: Simplify right side
7,720,913.96x = 45,653,691,118,639.64 - Step 5: Solve for x
x = 45,653,691,118,639.64/7,720,913.96 - Step 6: Final answer
x = 5,912,990.53
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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.