Finding the Fourth Proportional to 7,716,420.93, 10,649,139.55 and 4,278,661.96
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Solution
The fourth proportional to 7,716,420.93, 10,649,139.55 and 4,278,661.96 is: 5,904,818.92
Step by Step Solution
- Step 1: Write the proportion equation
7,716,420.93 : 10,649,139.55 = 4,278,661.96 : x - Step 2: Convert to fraction form
7,716,420.93/10,649,139.55 = 4,278,661.96/x - Step 3: Cross multiply
7,716,420.93x = 10,649,139.55 × 4,278,661.96 - Step 4: Simplify right side
7,716,420.93x = 45,564,068,299,316.52 - Step 5: Solve for x
x = 45,564,068,299,316.52/7,716,420.93 - Step 6: Final answer
x = 5,904,818.92
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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.