Finding the Fourth Proportional to 7,862,939.68, 10,854,204.78 and 5,286,115
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Solution
The fourth proportional to 7,862,939.68, 10,854,204.78 and 5,286,115 is: 7,297,089.52
Step by Step Solution
- Step 1: Write the proportion equation
7,862,939.68 : 10,854,204.78 = 5,286,115 : x - Step 2: Convert to fraction form
7,862,939.68/10,854,204.78 = 5,286,115/x - Step 3: Cross multiply
7,862,939.68x = 10,854,204.78 × 5,286,115 - Step 4: Simplify right side
7,862,939.68x = 57,376,574,700,629.70 - Step 5: Solve for x
x = 57,376,574,700,629.70/7,862,939.68 - Step 6: Final answer
x = 7,297,089.52
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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.