Finding the Fourth Proportional to 811,615.11, 1,217,410.35 and 279,140.75
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Solution
The fourth proportional to 811,615.11, 1,217,410.35 and 279,140.75 is: 418,706.88
Step by Step Solution
- Step 1: Write the proportion equation
811,615.11 : 1,217,410.35 = 279,140.75 : x - Step 2: Convert to fraction form
811,615.11/1,217,410.35 = 279,140.75/x - Step 3: Cross multiply
811,615.11x = 1,217,410.35 × 279,140.75 - Step 4: Simplify right side
811,615.11x = 339,828,832,069.71 - Step 5: Solve for x
x = 339,828,832,069.71/811,615.11 - Step 6: Final answer
x = 418,706.88
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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.