Finding the Fourth Proportional to 5,120,885.71, 7,679,639.68 and 1,708,231.87
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Solution
The fourth proportional to 5,120,885.71, 7,679,639.68 and 1,708,231.87 is: 2,561,784.42
Step by Step Solution
- Step 1: Write the proportion equation
5,120,885.71 : 7,679,639.68 = 1,708,231.87 : x - Step 2: Convert to fraction form
5,120,885.71/7,679,639.68 = 1,708,231.87/x - Step 3: Cross multiply
5,120,885.71x = 7,679,639.68 × 1,708,231.87 - Step 4: Simplify right side
5,120,885.71x = 13,118,605,251,492.60 - Step 5: Solve for x
x = 13,118,605,251,492.60/5,120,885.71 - Step 6: Final answer
x = 2,561,784.42
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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.