Finding the Fourth Proportional to 7,862,958.34, 10,854,230.40 and 5,286,134.12
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Solution
The fourth proportional to 7,862,958.34, 10,854,230.40 and 5,286,134.12 is: 7,297,115.82
Step by Step Solution
- Step 1: Write the proportion equation
7,862,958.34 : 10,854,230.40 = 5,286,134.12 : x - Step 2: Convert to fraction form
7,862,958.34/10,854,230.40 = 5,286,134.12/x - Step 3: Cross multiply
7,862,958.34x = 10,854,230.40 × 5,286,134.12 - Step 4: Simplify right side
7,862,958.34x = 57,376,917,663,781.25 - Step 5: Solve for x
x = 57,376,917,663,781.25/7,862,958.34 - Step 6: Final answer
x = 7,297,115.82
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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.