Finding the Fourth Proportional to 509,778.01, 703,511.69 and 280,352.80
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Solution
The fourth proportional to 509,778.01, 703,511.69 and 280,352.80 is: 386,896.78
Step by Step Solution
- Step 1: Write the proportion equation
509,778.01 : 703,511.69 = 280,352.80 : x - Step 2: Convert to fraction form
509,778.01/703,511.69 = 280,352.80/x - Step 3: Cross multiply
509,778.01x = 703,511.69 × 280,352.80 - Step 4: Simplify right side
509,778.01x = 197,231,472,124.23 - Step 5: Solve for x
x = 197,231,472,124.23/509,778.01 - Step 6: Final answer
x = 386,896.78
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1.5x scale
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.