Finding the Fourth Proportional to 665,867.40, 999,511.88 and 286,975.12
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Solution
The fourth proportional to 665,867.40, 999,511.88 and 286,975.12 is: 430,769.01
Step by Step Solution
- Step 1: Write the proportion equation
665,867.40 : 999,511.88 = 286,975.12 : x - Step 2: Convert to fraction form
665,867.40/999,511.88 = 286,975.12/x - Step 3: Cross multiply
665,867.40x = 999,511.88 × 286,975.12 - Step 4: Simplify right side
665,867.40x = 286,835,040,451.97 - Step 5: Solve for x
x = 286,835,040,451.97/665,867.40 - Step 6: Final answer
x = 430,769.01
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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.