Finding the Fourth Proportional to 509,931.80, 703,723.16 and 280,506.15
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Solution
The fourth proportional to 509,931.80, 703,723.16 and 280,506.15 is: 387,107.99
Step by Step Solution
- Step 1: Write the proportion equation
509,931.80 : 703,723.16 = 280,506.15 : x - Step 2: Convert to fraction form
509,931.80/703,723.16 = 280,506.15/x - Step 3: Cross multiply
509,931.80x = 703,723.16 × 280,506.15 - Step 4: Simplify right side
509,931.80x = 197,398,672,874.90 - Step 5: Solve for x
x = 197,398,672,874.90/509,931.80 - Step 6: Final answer
x = 387,107.99
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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.