Finding the Fourth Proportional to 509,905.13, 703,684.56 and 280,450.55
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Solution
The fourth proportional to 509,905.13, 703,684.56 and 280,450.55 is: 387,030.28
Step by Step Solution
- Step 1: Write the proportion equation
509,905.13 : 703,684.56 = 280,450.55 : x - Step 2: Convert to fraction form
509,905.13/703,684.56 = 280,450.55/x - Step 3: Cross multiply
509,905.13x = 703,684.56 × 280,450.55 - Step 4: Simplify right side
509,905.13x = 197,348,724,689.41 - Step 5: Solve for x
x = 197,348,724,689.41/509,905.13 - Step 6: Final answer
x = 387,030.28
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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.